Law & Order S15E19 - Sects

Detectives Fontana and Green are repulsed when they investigate the murder of a woman by a suicidal young man (Austin Lysy) and discover a cult which encourages adult-child sexual relations, and prosecutor Borgia is determined to nail the mesmerizing but formidable woman (Deborah Hedwall) who heads it. Aided by fellow EADA McCoy, Borgia traces a string of suicides from the surviving youths and searches for a secretive "Book of Daniel" that could wipe out the perverted sect forever.