Grace stars John Simm and Richie Campbell were spotted cooling down with ice lollies during a hot day of filming.
The ITV drama continued its filming in Brighton for the latest series of the show and headed in and out of a home in Eaton Place in Kemptown in between takes.
Other actors wearing medical scrubs and other costumes also mingled on set as the show continued to film scenes on the first day of summer in the city.
Crews took cover from the shade under gazebos erected on the street while Simm and Campbell filmed scenes inside the building on Friday afternoon.
Fans of the show clambered on the other side of the street to take photos as the duo came in and out of the building.
Grace, based on Peter James’s best-selling detective novels set in Brighton, has been filming across the city earlier this year.
John Simm returns as the titular detective Roy Grace while Campbell returns as DS Glenn Branson.
The show is expected to air next year.
Huw Kennair Jones, ITV’s drama commissioner, previously said: “We’re thrilled to be returning to Brighton and the world of Roy Grace and the team for another series of Peter James’ brilliant stories.
“Series five promises to deliver four more episodes full of surprises and intrigue that ITV audiences have come to love.”
Author Peter James has said it was a “dream come true” to see his books brought to life through the series.
He said: “It is both heartening and astounding to me that we’re already at series five.
“The continued success of Grace is a testament to the outstanding cast headed by John Simm, and crew and, equally importantly, the fans, who have loved and devoted their time to these characters both on the page and now the screen.
“It is also a testament to just how faithfully ITV have adhered to both the characters and stories in the novels.”
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