According to Digiguide, the third episode of Doctor Who Series 12 is titled Orphan 55. The guide also contained this synopsis:

Having decided that everyone could do with a holiday, the Doctor takes Graham, Yasmin, Ryan to a luxury resort for a spot of rest and relaxation. However, they discover the place where they are having a break is hiding a number of deadly secrets. What are the ferocious monsters that are attacking Tranquillity Spa?

The guest stars of the episode are listed as Laura Fraser and James Buckley. According to their online CVs, Laura Fraser plays Kane and James Buckley plays Nevi.

The guide named Ed Hime as the writer of Orphan 55. Hime wrote the Doctor Who Series 11 episode It Takes You Away.

Orphan 55 was partly filmed on location in Tenerife as part of Block 2 filming of the series, directed by Lee Haven Jones, who also directed Spyfall, Part 2.

Orphan 55 airs on Sunday, January 12 at 7:10 p.m. on BBC One and 8:00 p.m. on BBC America.