CSI: Miami Season 7 Episode 13

Robert Banyon is shot while watching and recording a horse race, alone, from his private luxury suite. The murder weapon turns out to be a cattle 'bolt gun', found hidden in his horses' paddock. Stable hand, Terrance Chase, has obvious access. He was visited by the scorned Chicago 'would be' stable partner Wayne Tully. Horse vet Mark Gantry's abandoned son, Billy, leads Horatio to a connection with Ryan from his gambling days. At the Gantry home he fought off Russian mob lord Ivan Sarnoff's goon. There is race cheating. Cocaine seems to link everything.