TAKEN DOWN Stream on Acorn TV. Gritty crimes shows may be ubiquitous, but it’s not common for them to engage with pressing political issues. This Irish series is among the exceptions. It focuses on the perils faced by Dublin’s refugee communities. A team of detectives is tasked with solving the murder of a Nigerian teenage girl and the disappearance of another young Nigerian woman, both of whom lived in a center for refugees seeking asylum. They are also, it turns out, both connected to a local brothel. As the detectives’ search for the truth progresses, the center’s director (Brian Gleeson) seems to have sinister motives for standing in their way. All six episodes are now available.

What’s on TV

DANCING WITH THE STARS 8 p.m. on ABC. The popular series begins its 28th season with a new group of celebrity dancers and the return of Peta Murgatroyd, a professional dancer and audience favorite. This year’s roster of notable competitors includes something for everyone. Die-hard fans of reality television will relish the chance to see Hannah Brown, last season’s “Bachelorette,” onscreen once again and to find out if Karamo Brown’s expertise in cultural matters extends to dance. Sports fans will be interested to see the basketball player Lamar Odom and the former football player Ray Lewis try to translate their athleticism into moves on the dance floor. And for those interested in politics, the inclusion of Sean Spicer, the former White House press secretary, should be fascinating.