By Linda Park has signed up to appear in Castle.
The actress will play Inspector Zhang, who works with Beckett (Stana Katic) in episode 17 of the current season, reports TVLine.
Executive producer David Amann said: "[Zhang is] kind of like Beckett, except even better, so that puts Beckett in a bit of a tailspin - to be dealing with somebody who in her eyes is more accomplished and proficient."
Park is known for starring in Star Trek: Enterprise between 2001 and 2005.
She has also appeared in Women's Murder Club and the Crash TV series, as well as episodes of House, The Mentalist and Legends.
ABC previously hinted that Castle will return for an eighth season.
Castle continues Monday on ABC in the US. Alibi airs the series in the UK.
