Castle (2009)

The Mistress Always Spanks Twice

Aired Mar 8, 2010 · 9:00 PM ET · 45 min

When a half-naked woman is found covered in caramel sauce and hanging by bondage cuffs in a public park, Castle and Beckett's investigation takes them into New York's underground world of sexual domination. Naturally the case serves as sexy fodder for their already charged relationship banter.