In Criminal Minds episode 4x07, titled "Spencer Interrogates His Dad," a confrontation takes place between the character Spencer Reid and his own father. The episode showcases the complexity of their relationship. Spencer is a member of the elite FBI team known as the Behavioral Analysis Unit (BAU), which investigates and profiles criminals to solve cases. Throughout the series, Spencer has demonstrated a high level of intelligence and a unique ability to understand the minds of criminals. 

This episode explores his personal background, specifically his troubled relationship with his father.

As Spencer interrogates his dad, it becomes apparent that their connection is strained, as his father was absent for most of his childhood. Despite the tension, Spencer uses his interrogation skills to unravel the truth about a disturbing case that the BAU is currently working on. Alongside this personal storyline, the team is confronted with a separate case involving a serial killer who is targeting young women. As the episode progresses, Spencer's interrogation of his dad and the profiling of the serial killer converge, leading to a shocking revelation. "Spencer Interrogates His Dad" delves into the emotional and psychological dynamics of the characters, highlighting the impact of family relationships on their lives and careers.