The return of hit bonkbuster Rivals, the horny hockey show taking the world by storm, Richard Gadd’s follow-up to Baby Reindeer … and Buffy is back! Here’s your complete guide to 2026’s unmissable television

As the writer of conspiracy thriller Utopia and Covid-era relationship drama Together, Dennis Kelly has form for creating darkly perceptive TV drama. This excellent series stars Josh Finan (whose performance in The Responder earned him a Bafta nomination) as Dan, a philosophy teacher with a troubled family past, working in a prison. As he explores issues around freedom, luck and destiny with the inmates, he starts to wonder if he actually belongs behind bars like his abusive father. Soon, his anxieties threaten to become a self-fulfilling prophecy.
• BBC One, 3 January