Best Friend is a 2019 American Psychological Horror film written by Sean Baker and Chris Bergoch. Directed by Sean Baker and distributed by A24 Pictures, it is based on the real life American David Berkowitz, famously known as the 'Son of Sam' who claimed after his shootings in his first confession, his actions owed to influence from a demon manifesting in his neighbor's pet dog Harvey.

The film stars Christian Cooke, Jack Lowden, Yifei Liu, Peter Stormare, Karan Soni and Suki Waterhouse.

Released theatrically and in select IMAX theatres on September 24th, 2019 the film was met with critical acclaim and reception.



  • Christian Cooke as Haven Stall
  • Jack Lowden as Craig Penn
  • Yifei Liu as Julie Penn
  • Peter Stormare as Dr. Ludqiv Trestch
  • Karan Soni as Barry Latt
  • Suki Waterhouse as Brittany Debnam
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