Tethics is the fifth episode of Season 6. It premiered on November 24, 2019.
Richard fumes at Gavin's new ethical stance; Dinesh's trip turns into a nightmare; Gilfoyle and Monica work on their peer review scores.
- Thomas Middleditch as Richard Hendricks
- Josh Brener as Nelson "Big Head" Bighetti
- Martin Starr as Bertram Gilfoyle
- Kumail Nanjiani as Dinesh Chugtai
- Amanda Crew as Monica Hall
- Zach Woods as Donald "Jared" Dunn
- Matt Ross as Gavin Belson
- Suzanne Cryer as Laurie Bream
- Jimmy O. Yang as Jian-Yang
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