When a knife-wielding attacker dressed as Baron Samedi, the Spirit of Death, stabs a man in costume on Halloween, Danny enters the world of voodoo. Meanwhile, DCPI Garrett opens up to Frank about a dark secret, and Erin and Nicky take Jack and Sean trick-or-treating.

Movie rating: 7.9 / 10 (342)

Directed by: Martha Mitchell - Robin Green - Mitchell Burgess - Daniel Truly

Writer credits: Robin Green - Mitchell Burgess

Cast: Donnie Wahlberg - Bridget Moynahan - Will Estes - Len Cariou - Tom Selleck

AKA: Keeping the Faith, Blue Bloods, sangue azul, Blue Bloods S12, Spain (Blue Bloods (Familia de policías)), Zsaruvér

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