Caleb is obsessed with his childhood best friend, Harvey Morell (played by Finn Wittrock ). He believes Harvey "sold out" by living a normal life and getting married.
Caleb Rossmore, a former child prodigy and trash collector. [S7E11] True Genius
Both the UnSub and his target were champion chess players as children, a skill that mirrors the strategic "game" Caleb plays with the BAU. Caleb is obsessed with his childhood best friend,
The episode is heavy on intellectual puzzles and historical references. Both the UnSub and his target were champion
Caleb abducts Harvey’s fiancée to force a final confrontation, testing whether Harvey is still a "true genius" like him. 🎂 Character Spotlight: Dr. Spencer Reid
Much like the real Zodiac, Caleb sends complex codes to the police. Reid eventually breaks these by realizing they are personal messages to Harvey rather than general threats.
The episode references real-world events, such as the Lake Berryessa stabbing and the Paul Stine murder. "Criminal Minds" True Genius (TV Episode 2012) - IMDb