VIDEO: Sneak Peek - Tonight's Season Finale of CBS's ELEMENTARY

On tonight's episode of CBS's ELEMENTARY titled 'The Woman and the Heroine,' as Sherlock reels at the reappearance of his former lover, Irene Adler, a series of flashbacks unravel the tumultuous events that led to his downfall into addiction.

Meanwhile, he and Joan once again find themselves in the crosshairs of the enigmatic Moriarty, on the two-hour season finale of ELEMENTARY, on Thursday, May 16 (9:01-11:00 PM, ET/PT) on the CBS Television Network. Get a sneak peek below!

ELEMENTARY stars Jonny Lee Miller as detective Sherlock Holmes and Lucy Liu as Dr. Joan Watson in a modern-day drama about a crime-solving duo that cracks the NYPD's most impossible cases. Following his fall from grace in London and a stint in rehab, eccentric Sherlock escapes to Manhattan where his wealthy father forces him to live with his worst nightmare – a sober companion, Dr. Watson.