In P.S.I. Part II--The Thaw, Mike remarried, only to find both of his wives to be concoctions of his traumatized mind after being involved in a fire truck accident.

Or were they?

Mike's problems had only just begun.  Both wives proved to be real in the person of Captain Stanley's neice, jockey Betsy Stanley.  After she and Mike were engaged, she was murdered by her former fiance after she won a stakes race in Kentucky.

On the heels of Betsy's murder, nurse Dixie McCall had two heart attacks, and is now fighting for her life at Rampart . . .