The X-Files: 9x13
Improbable
When Reyes uses numerology to connect the murders of several women to an obsessed serial killer, she and Scully become trapped with a mysterious checker-playing man who may or may not be the killer.
9 - 2Nothing Important Happened Today II (2) Nov. 18, 2001
9 - 3Dæmonicus Dec. 02, 2001
9 - 44-D Dec. 09, 2001
9 - 5Lord of the Flies Dec. 16, 2001
9 - 6Trust No 1 Jan. 06, 2002
9 - 7John Doe Jan. 13, 2002
9 - 8Hellbound Jan. 27, 2002
9 - 9Provenance (1) Mar. 03, 2002
9 - 10Providence (2) Mar. 10, 2002
9 - 11Audrey Pauley Mar. 17, 2002
9 - 12Underneath Mar. 31, 2002
9 - 13Improbable Apr. 07, 2002
9 - 14Scary Monsters Apr. 14, 2002
9 - 15Jump the Shark Apr. 21, 2002
9 - 16William Apr. 28, 2002
9 - 17Release May. 05, 2002
9 - 18Sunshine Days May. 12, 2002
9 - 19The Truth (1) May. 19, 2002