A recurring dream—triggered by a brief news report about a Russian man named Ilya—leads Castle to seek help from Beckett's therapist, Dr. Burke. The investigation intensifies when a mercenary from Castle’s dream is found dead with a bullet to the forehead.
While Castle is the most direct match for "S7E20 Sleeper," the following shows also have a 20th episode in their 7th seasons: [S7E20] Sleeper
: Bilal was nearly killed meeting his CIA contact and demanded someone famous and familiar to him to guarantee his safety for the next meeting. A recurring dream—triggered by a brief news report
Buffy and Spike's complex relationship in Buffy the Vampire Slayer [S7E20] Sleeper