The Ravencroft Institute is a fictional maximum security prison for the criminally insane appearing in comic books published by Marvel Comics.
Ravencroft Institute for the Criminally Insane was a maximum-security asylum for the mentally ill.[1] Many insane murderers and supervillains, such as Carnage,[volume & issue needed] and Venom,[volume & issue needed] have been kept at Ravencroft.
The institute was first mentioned in Web of Spider-Man #112, written by Terry Kavanagh. The institute officially opens in Web of Spider-Man Annual #10 (1994), written by Terry Kavanagh, with art by Jerry Bingham.
Dr. Ashley Kafka was the founder and first director of Ravencroft.[volume & issue needed] John Jameson was head of security.[volume & issue needed] Both get fired in Spectacular Spider-Man #246, and Dr. Leonard Samson becomes Ravencroft's new director.[volume & issue needed] The institute hasn't appeared since and in Leonard Samson's recent appearances, he owns a private practice.