The Best Episodes Written By Prentice Penny

Tensions run high during Derek and Tiffany's dinner party. Molly rethinks her future after being forced to come to terms with her romantic realities. Issa tries to make things right with Frieda.

Issa preps for a fund-raiser, but has trouble staying focused. Meanwhile, Lawrence mulls a job opportunity; and Molly learns something new from an old friend.

For their annual Halloween wager, Jake bets Holt that he can steal his watch before midnight, and Gina gets kicked off her dance squad, Floorgasm.

On a solving streak, Jake decides to spend his weekend off with Sgt. Terry trying to crack a cold case that no one thinks can be solved.

Jake's unsolved cases pile up and the other detectives fear that his losing streak will rub off on them, while Amy must run an at-risk youth program.

When his relationship with Sophia gets in the way of her work, Jake tries to help, Wuntch needs Holt's help, and Charles wants Gina's blessing.

On his first task back in the field, Terry takes advice from Jake on controlling his emotions to infiltrate and bust a steroid trafficking ring.

Lucy finds couplings, dysfunctional or not, throughout the hospital

When Cole and Kelso both get negative results back after a few routine tests, they learn the hard way to put their egos in check in order to rein in the support of their so-called friends.