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S01E14: Blood ChemistrySean and Jonah go undercover to track down a dangerous new threat affecting Boston's young adults, forcing Sean to confront unresolved ties from his past along the way. Meanwhile, personal revelations and family concerns surface as the team navigates health scares, and growing public attention brings new challenges.
Air Date:
Apr 10, 2026
Production:
Casts:
Donnie Wahlberg, Sonequa Martin-Green, Ernie Hudson, Maggie Lawson, Gloria Reuben, Marcus Scribner, Mika Amonsen
