At a college conservatives event, students aim to give the Party Down team advice on success. As the event goes on, it turns out the students may not be so…

Feeling guilty over the stabbing, Charlie puts his attention on finding a serial killer using math theories to help the team solve the case before another life is taken.

The team sifts through various rumors about a controversial charity organization to find the guilty party after its office building is bombed.

After a personal grooming mishap, Charlie discovers that his vasectomy was botched and that Marcy’s baby could be his; Hank’s relationship with lawyer Abby gets more personal but a good…

Hank takes advantage of the misperception that he tried to commit suicide and moves back home with Karen and Becca, but his daughter knows the truth; Charlie sets out to…

Hayley breaks up with her boyfriend and falls for Stan’s body double from the CIA. Things take a bizarre twist when the double begins hitting on Francine.

Convinced she’s met the love of her life, Tina decides to disguise herself as a boy and sneak into the Boyz 4 Now auditions to find him. Back at the…

Neela (who’s in Chicago) and Gallant (who’s in Iraq) miss each other and write letters. Gallant also tries to save the life of a little girl.

When an old neighborhood kid returns to town as a hugely successful internet billionaire, it gets Phil thinking of what could have been. Jay feels Manny could use a little…

Mitchell learns a valuable life lesson when Murray, a former resident of the house, shows up unexpectedly. Meanwhile, the Dunphy’s old neighbor-turned-tech-titan, Kenneth, comes to visit with a big surprise…