Courtney Gebhart

A serial killer who targets college girls has struck again, and the town of Neptune is terrified. Keith, who previously worked on the case, temporarily returns to the sheriff's department to help catch the killer. Meanwhile, Veronica's own investigative caseload (and income) increases as she conducts background checks to get the "dirt" on her schoolmates' parents. But for her computer geek friend, Mac (recurring guest star TINA MAJORINO), the information Veronica learns may have life-altering consequences.

When the Tri-State fair comes to Raytown, Mama takes in weekend boarders in order to buy a new stove. All "bed"lam breaks loose when they overbook and the family winds up sleeping together in the same room.

The death of a bone marrow donor leads Reno and Bobby to investigate the troubling past of one of Bobby's former mentors, a shady motivational speaker.

Sam (Scott Bakula) leaps into the body of Lester "Doc" Fuller, pitcher for the Galveston "Mustangs," a minor league baseball team. Sam (Scott Bakula) is here to get Doc from the minors to the majors and to prevent his premature death.

Charles is assigned to be a teacher's aide in Jamie's health and hygiene class much to Jamie's consternation. Charles introduces himself to the teacher, Mr. Merken (Jerry Van Dyke), who has a tired and negative attitude towards the students and teaching profession. The next day in class, Mr. Merken hands the class over to Charles who is extremely nervous. The topic is human sexuality, and Charles cannot bring himself to openly name the anatomical parts. Jamie begins heckling him to such a point that he assigns her three hours of detention on Saturday -- the day that Jamie is to cheerlead the football game.