From episode 1x01 "X-22".
Source: IMDb
From episode 1x02 "Stop the Presses".
From episode 1x04 "Killing Isn't Everything".
From episode 1x05 "Who Would Kill Ramona?".
From episode 1x08 "The Kidnapping".
From episode 1x11 "The Rock and the Hard Place".
From episode 1x12 "The Purrfect Crime".
From episode 1x13 "The Yacht Club Murders".
From episode 1x19 "The Showgirl Murders".
From episode 1x20 "Fear for Tomorrow".
From episode 1x21 "A Deadly Parlay".
From episode 2x02 "The Woman in White".
From episode 3x14 "Breakpoint".