As Jenny and Donovan (Serinda Swan, Roger Cross) investigate a lab technician's death, her personal interest in the research being done at the facility threatens to distract from her focus in the new episode "Crispr Sistr." Liam (Éric Bruneau) approaches the end of his rope as he is confronted with tragedy. Meanwhile, River (Kiley May) meets her new colleague. Ehren Kassam and Nicholas Campbell also star.