Shetlands Series 7 return is a bittersweet one for fans of the Scottish BBCcrime drama.
The six-episode run will be actor Douglas Henshalls last in the lead role of DI Jimmy Perez.
A new, as-yet-unannounced, lead actor will be joining the returning cast for that run.
Groundsell has also appeared in Irvine Welsh adaptationCrime,Grantchesterand more.
Hes played by Ladi Emeruwa, whos had previous roles inBerlin Station,ChimericaandRiviera.
Brett recently appeared in Scottish forensics dramaTracesand starred opposite David Tennant in excellent domestic dramaDeadwater Fell.
Billy McCabe, Angus Miller asDonnie, and Connor McCarry asPC Alex Grant.
Anne Kidd returns as forensic specialistCora McLean, Anneika Rose as procurator fiscal/public prosecutorMaggie Kean.
Shetland Series 7 airs weekly on BBC One andiPlayerstarting Wednesday August 10that 9pm.