Peter Shamshiri is a lawyer, writer and podcast host who has gained considerable fame  and recognition for his contributions to the field of legal and political commentary. He is  best known as one of the hosts of 5-4, a podcast that critically and humorously covers the  U.S. Supreme Court. He also co-hosts If Books Could Kill with journalist Michael Hobbes,  discussing popular nonfiction books and challenging the arguments and ideas put forth in  them. 

Who is Peter Shamshiri? 

Peter Shamshiri is an American lawyer and legal commentator who has risen to  prominence as a podcast host. He is particularly well known for hosting the podcast 5-4,  which he does alongside lawyers Rhiannon Hamam and Michael Liroff. 

Unlike many of his contemporaries, however, Shamshiri takes a more conversational  approach to discussing the U.S. Supreme Court and its decisions, focusing on the political  and practical implications of these rulings rather than just the technicalities of the law. 

Early Life and Background 

Much of Shamshiri’s early life and personal background is rather private, as he rarely  discusses either the former on social media or the latter in his professional capacity. 

In fact, it is a known characteristic of his that, until the popularity of 5-4 skyrocketed due to  a combination of impeccable timing, professional writing and a unique mix of humor and  serious topics, he avoided speaking about his work other than in his professional capacity  as a lawyer. This was particularly noticeable in the early days of 5-4, when the podcast was  still relatively unknown and the three hosts – Shamshiri, Hamam and Liroff only spoke  about themselves in terms of their first names. 

With the advent of increased popularity and wider critical acclaim, however, certain  information about Shamshiri’s personal and professional life became more known and  available. In particular, much of his professional experience prior to 5-4 was revealed, as it  became apparent that all three hosts were active in the legal field prior to launching the  podcast

Education and Legal Career 

Shamshiri’s professional qualifications as a lawyer have proved to be invaluable to his work  as a podcaster, providing him with the necessary skills to comment on the inner workings  of the judiciary with a degree of technical competence seldom seen outside of the  profession itself. 

Prior to 5-4, he worked as an attorney, including a stint as in-house counsel for MetLife.  This professional experience has enabled him to better navigate the intricacies of the law  as well as the inner workings of the supreme courts – a trait that has proved to be  instrumental in the success of 5-4.  

The Beginning of 5-4 

Much of Shamshiri’s professional reputation, as well as the majority of his fame and critical  acclaim, has been achieved due to his work on 5-4. It is therefore of no surprise that he has  been significantly more open about the origins of the podcast compared to other aspects of his life. 

5-4, as mentioned above, is hosted in conjunction with fellow lawyers Rhiannon Hamam  and Michael Liroff. It launched in February 2020 as a Prologue Projects production by Leon  Neyfakh, and describes itself as “a podcast about the Supreme Court that takes an  irreverent look at how politics steals away our legal judgments.” The podcasters  themselves describe their work as “proponents of legal realism,” a viewpoint which, as per  their own account, informs much of their writing for the podcast. Though individual  episodes of 5-4 tend to focus on individual cases considered by the U.S. Supreme Court,  the podcast as a whole covers a variety of topics related to law, politics and, occasionally, other issues. 

Shamshiri’s Career Change 

One of the most interesting aspects of Shamshiri’s professional biography concerns his  firing as an attorney due to his open and often scathing commentary on the workings of the  U.S. judicial system. 

According to reports concerning the podcast’s origins, Shamshiri was allegedly fired by his  employer after they discovered his involvement with 5-4.  

Despite the potentially career-ending nature of such an experience, it appears to have  redounded to the benefit of his professional reputation and standing in the public eye. In  particular, it appears to have coincided with the advent of his podcasting career. Over the  years, it has grown exponentially in popularity and critical acclaim, encompassing both 5-4  and his later project If Books Could Kill. 

If Books Could Kill 

Shamshiri’s later career saw him expand his repertoire from the U.S. Supreme Court to  subjects pertaining to nonfiction literature, both in general and specifically in regards to its  relationship with popular culture and ideas. If Books Could Kill, the podcast he hosts in  conjunction with journalist Michael Hobbes, examines the ways in which best-selling  nonfiction books interact with the larger culture. 

It thus presupposes a degree of engagement with both the topics covered in said books  and the ways in which they are interpreted outside of their original context. In particular, its  hosts – Shamshiri and Hobbes – tend to apply a mixture of humor and extensive research to  discussing potentially contentious, controversial or simply dubious claims made by the  authors of books on nonfiction.

Shamshiri’s Style of Commentary 

Much of the aforementioned success and critical acclaim earned by Shamshiri is due to his  unique approach to commentary, which combines elements of legal expertise, humor and  research to create a unique blend of entertainment and information. 

On 5-4, he uses his legal expertise and the perceived legitimacy it grants him to discuss  various aspects of the U.S. Supreme Court, the politics therein and the ways in which they  affect wider society. On If Books Could Kill, he applies a similar approach to the topics of  nonfiction literature, popular culture and ideas. 

This allows him to reach a wider audience that is not necessarily invested in the mechanics  of the law but is interested in hearing a well-researched and entertainingly presented  assessment of potentially controversial topics. In this regard, Shamshiri has proved to be  an effective public speaker and commentator with an ability to reach out and affect  audiences beyond the aforesaid niche of the legal profession. Shamshiri is also known to  hold controversial views on certain topics, including politics and the law in particular. 

Personal Life 

Shamshiri’s personal life is largely not discussed very often by him or those around him. In  fact, aside from references concerning his work and professional experience, there is little  information about him, his family life or romantic relationships. This is comparatively rare  

for someone of his status and fame, as most modern podcasters tend to discuss at least  certain aspects of their personal lives on a regular basis. As such, Shamshiri’s avoidance of  the topic altogether is rather telling.

Peter Shamshiri Today 

As of 2026, Shamshiri continues to be a part of both 5-4 and If Books Could Kill, as  evidenced by the respective podcasts’ continued production and his presence on their  official websites. 

His professional accomplishments have since transcended the realm of the legal  profession, granting him a certain degree of fame and critical acclaim across multiple  spheres. As he continues to work on both projects, his work remains as relevant and  widely-anticipated as ever. 

Conclusion 

Peter Shamshiri’s professional biography is an intriguing case study that showcases the  development and growth of the podcasting industry. From his beginnings as a lawyer to his  current status as a widely-known and respected public figure, he has managed to carve a  unique space for himself in the industry. His work on 5-4 in particular has earned him  considerable critical acclaim due to his ability to commentate on the U.S. Supreme Court  in a manner that combines legal expertise, wider political commentary and humor. The  launch of If Books Could Kill has since allowed him to expand his creative horizons,  applying a similar approach to discussing topics of nonfiction literature, popular culture  and ideas. Despite being a reclusive figure in terms of his personal life, Shamshiri has since  become a household name amongst those interested in either the topics he discusses or  the medium itself. 

Frequently Asked Questions 

Who is Peter Shamshiri?

Peter Shamshiri is a lawyer, writer, and podcast host best known for co-hosting 5-4.

What is Peter Shamshiri famous for?

He is primarily known for 5-4, a podcast covering the U.S. Supreme Court from a critical perspective.

Who are the other hosts of 5-4?

Rhiannon Hamam and Michael Liroff host the podcast alongside Shamshiri.

When did 5-4 begin?

The podcast launched in February 2020.

Is Peter Shamshiri a lawyer?

Yes. He has a professional background in law and previously worked as in-house counsel.

Why did Peter Shamshiri leave his legal job?

His employer reportedly discovered his involvement with 5-4 and subsequently fired him.

What is If Books Could Kill?

It is a podcast co-hosted by Shamshiri and Michael Hobbes that examines popular nonfiction books and the ideas presented in them.

Is Peter Shamshiri married?

Shamshiri generally keeps his personal life private, so relatively little verified information about his family life is publicly available.

Is Peter Shamshiri still podcasting?

Yes. He continues to host both 5-4 and If Books Could Kill as of 2026.

What makes Peter Shamshiri’s work different?

His work combines legal analysis with humor, political commentary, and a strong focus on questioning conventional interpretations of law and popular ideas.