Is Tatau coming back?

No — Tatau ended on May 17, 2015, on BBC Three. The series concluded after its first season, which aired in 2015.

Tatau was a drama, crime, and fantasy series set in the Cook Islands. It was a story about two friends from London, Kyle and Budgie, who travel to the Cook Islands and become entangled in local myths, symbols, and hallucinatory visions after Kyle gets a Maori-style tattoo. The plot revolved around their investigation into the mysterious disappearance of a local girl, Aumea, which led them into a world of supernatural elements rooted in Maori culture.

The show featured actors Joe Layton as Kyle Connor, Theo Barklem-Biggs as Paul "Budgie" Griffiths, and Shushila Takao as Aumea Vaipiti. It had a rating of 7.3 on TVMaze and each episode had a runtime of approximately 45 minutes.