The Mentalist - Season 4 - Eps 22: So Long, and Thanks for All the Red Snapper
While investigating the murder of a surfer, Lisbon reconnects with her former fiancé, Kenny Johnson, who she hasn't seen in over a decade. Also, Cho questions his decision to be in a relationship with Summer.
About The Mentalist

Title: The Mentalist
First Air Date: 2008-09-23
Last Air Date: 2015-02-18
Status: Ended
Rating: 8.369/10 (from 3866 votes)
Language: EN
Seasons: 8
Total Episodes: 151
Network: CBS
Genres: Crime, Drama, Mystery
Production Companies: Warner Bros. Television, Primrose Hill Productions
Synopsis
Patrick Jane, a former celebrity psychic medium, uses his razor sharp skills of observation and expertise at "reading" people to solve serious crimes with the California Bureau of Investigation.
Cast

Simon Baker
Patrick Jane

Robin Tunney
Teresa Lisbon

Tim Kang
Kimball Cho

Rockmond Dunbar
Dennis Abbott

Joe Adler
Jason Wylie

Josie Loren
Michelle Vega