Lori Harmon

Derek looks for the perfect way to propose to Meredith; Lexie wants Mark to go public with their relationship; Bailey considers taking her medical career in a new direction.

The case of two teens who killed themselves after a murderous rampage at a mall in 1995 reopens when evidence indicates there may have been a third shooter.

Frasier tries to reunite his family after discovering an old feud with his Greek aunt is affecting a big occasion.

Sipowicz works as a guard for an eccentric woman; Sipowicz believes a new detective is unqualified; purebred puppies are stolen from a pet store; a man accused of child molestation is found murdered.