Apple TV's Trying season 5 is in full swing as its fifth episode, 'Ick', treats fans to a guest appearance from The Thursday Murder Club and The Traitors star Celia Imrie. Apple TVRelated: Best streaming servicesImrie's character Harriet James is involved in Jason's social worker storyline as he and Chrissy pay the character a house visit. Described as an eccentric, upper-class compulsive hoarder, Harriet isn't too keen on Jason accompanying Chrissy. The newbie social worker managers to elbow his way in, though it's clear Harriet isn't giving up without a fight. Trying season 5 streams on .