Our wonderful Shvorne Marks in ‘Trigonometry’ on BBC Two.

“Trigonometry has emotional and psychological truthfulness at its heart. Funny and full of sexual tension, Gemma and Kieran have everything to lose. As this unusual relationship becomes unavoidable, the trio approach it with the prudence of people in their 30s.

“Is it possible to love in a different way? But even when common sense, friends and family are telling them that this complicated relationship is doomed, Gemma, Kieran and Ray simply can’t be apart…”

Episodes are now continuing weekly on Sundays at 10PM.