> ## Content Index
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# Toxic
- URL: https://www.cascadepbs.org/show/mademoiselle-holmes/episode/toxic-r0kvs0/
- Published: 2026-03-30T14:45:27.000Z
- Updated: 2026-04-10T07:30:34.000Z
- Description: A professor and student are poisoned in a dorm, revealing a dangerous secret link.
- Author: Cascade PBS Staff
- Tags: Mademoiselle Holmes, Season 2, Episode 5, #ZZZ_Episode_28613ba6-8dfd-49ee-96b1-7f11c3dc28d7, #episode, #ZZZ_Show_8ceaed55-610e-4b00-8f78-67928f2396be, #v1.16

It's back to college for Samy: one of his former professors and a student have been found dead, asphyxiated by a strange drug. What was going on between the professor and her student? And who was the real target?