Castle 8x21 Promo - Castle Season 8 Episode 21 Promo “Hell to Pay” (HD)

Castle season 8 Episode 21 promo for coming Monday 8x21 ” Hell to Pay ” - When an axe-wielding, escaped psychiatric inmate drops dead in Castle’s P.I. office, Castle and Beckett’s investigation leads Castle to suspect the victim’s death could be the work of the Antichrist, on Castle, MONDAY. Castle 8x21 Promo “Hell to Pay“ is closed captioned in English. Website: Air date is May 9th Monday ABC.