10/26/2009 (09:00PM - 10:00PM) (Monday) : IT'S HALLOWEEN TIME IN SAN FRANCISCO AND ANYTHING CAN HAPPEN ? Tyler (Kevin Rankin) and Boone (Derek Luke) are on the scene when chaos erupts at a Halloween party. Meanwhile, Nancy (Anastasia Griffith) and Glenn's (Taylor Kinney) shift takes an unusual turn. Elsewhere, a secret is revealed that can change a partnership. Aimee Garcia, Jamey Sheridan and Cliff Curtis also star. Scottie Thompson and Ryan Michelle Bathe guest star.