“Elementary” (10 p.m., CBS): Tech billionaire Odin Reichenbach presents Holmes and

“Elementary” (10 p.m., CBS): Tech billionaire Odin Reichenbach presents Holmes and Watson with an extraordinary offer to help him with a program that can predict future crimes. Also, Holmes and Watson assist Bell when he tries to prevent a future crime of his own, as he races to locate a fellow NYPD officer planning a sniper shooting.

TV listings, B5