Tim Walsh Creator, Executive Producer, Writer Elliot Wolf Creator, Executive Producer, Writer Troian Bellisario Traci Harmon Actor Brandon Larracuente Alex Diaz Actor Eriq La Salle Sergeant Lasman Actor, Executive Producer, Director Lori Loughlin Lieutenant Bishop Actor Rich Ting Sergeant Koyama Actor Rafael Cabrera Rafa Guest Star Rich Ceraulo Officer Matthew Rolland Guest Star Rocky Marquette Mark Guest Star Chris Cortez Joker Guest Star Callie Schuttera Mystery Mary Guest Star Morgan E. Bastin Aubree Guest Star Laura Linda Bradley Medic Wynn Guest Star Kenneth Miller Sean Guest Star Zyaire Clemes Detective McGavin Guest Star Vanessa Mizzone Mother Guest Star Shavya Samala Spectator #1 Guest Star Blake Kennedy Amelia Guest Star Gino Woulard Suspect Guest Star Erik Odom Son , Ricky Guest Star Alaina Pollack Alaina Pollack Guest Star Dick Wolf Executive Producer Peter Jankowski Executive Producer Arthur W. Forney Executive Producer Brenna Malloy Director, Supervising Producer Adam Silver Cinematographer Micky Blythe Film Editor Troy Takaki Film Editor Sara Isaacson Casting Ray Yamagata Production Design Mike Piccirillo Art Director Dorit Hurst Set Decoration