Son of the Defender

S3 E18: Fifty years after Denny and his father successfully defended a man accused of murder, the son of the victim seeks revenge by holding the law firm hostage and forcing them to "retry" the case; flashbacks of Denny and his father are taken from "The Defender", a 1957 episode of the series Studio One in Hollywood, in which William Shatner's character, Kenneth Preston, sparred with his lawyer father, Walter, who is convinced of their client's guilt; Alan defends his neighbor and the state senator found in bed with her on charges of prostitution and soliciting.