Detective thriller series Six Four is set to air on ITV1 very soon after being made available as a boxset on ITVX earlier this year.

It initially premiered on ITV's streaming platform back in March but will now be broadcast on TV also.

Kevin McKidd and Vinette Robinson lead the story playing a married couple whose world is rocked when their daughter goes missing.

The Radio Times adds: "Michelle uses her skills as a former undercover officer to try to get to the bottom of the case, while Chris, a serving police detective, is also confronted with a similar case of a local girl's disappearance that has gone unsolved.

"The series not only centres on this major mystery but also involves politics, extortion and corruption making for a crime thriller like no other and an unmissable twisty must-watch."

Six Four full cast

  • Kevin McKidd as Chris O'Neill
  • Vinette Robinson as Michelle O'Neill
  • James Cosmo as Jim Mackie
  • Brian McCardie as Bill Martin
  • Richard Coyle as Robert Wallace
  • Alison Peebles as April Mclean
  • Alex Ferns as Gordon Byrne
  • Laura Cairns as Ms Fullerton
  • Lorne Macfayden as Stuart Simpson
  • Andrew Whipp as Philip O'Neill
  • Iona Anderson as Annabel Wallace
  • Frances Grey as Pauline Wallace
  • Jessica Hardwick as PC McKenzie

When will Six Four be on TV?

The first episode of Six Four will air at 9pm on Sunday, October 22 on ITV1.

After that, the remaining three episodes will air in the same timeslot in the following weeks, but all episodes are on ITVX already if you can't wait that long.