Tit for Tat

"Tit for Tat" was the fifteenth episode of the eleventh season of 7th Heaven. On its original airing, the episode scored 2.90 million viewers. The Colonel and Ruth are in this episode.

Plot
Colonel John Camden and his wife Ruth are staying over on their way to Hawaii, unannounced. Fearing they will spill the beans, Lucy wants to skip town with Kevin supposedly to help Simon, asking Sandy to cover church service, so she stays in their place with baby Aaron; she's warm to boy-friend Dr. Jonathan Sanderson, chilly to Martin. T-Bone needs help for his first Valentine's day with a girl-friend, Ruthie insists they get matching tattoos, despite his and Margaret's reluctance for permanent markings, having to hide them for the Camdens and a serious needle-phobia. Mac is happy moving into the trio's apartment means 'adult' independence, the girls see domestic misery. When Jane gets her divorce papers from soldier Jack, she wants to wait till after Valentine's day. The grandparents overhear the twins with their parents, and suggest they may soon move for good. Lucy changes her minds and turns up with Kevin.

Trivia

 * This is the final episode the Colonel and Ruth are in.
 * It was mentioned that George Camden followed his father footsteps and is a private in the army and went to Iraq. It was also revealed that he married Jane, who ironically had stayed at the Camdens.
 * While not exactly Valentine's day, the main theme of this episode was Valentine's with it being a couple days away.

Opening Credits
Featured in the opening credits are:
 * Stephen Collins as Eric Camden
 * Catherine Hicks as Annie Camden
 * Beverley Mitchell as Lucy Camden
 * Mackenzie Rosman as Ruthie Camden
 * Nikolas & Lorenzo Brino as Sam and David Camden
 * George Stults as Kevin Kinkirk
 * Tyler Hoechlin as Martin Brewer
 * Haylie Duff as Sandy Jameson