Season four picks up a year after season three, and business couldn't be better at the Wild/Reid Detective Agency as Harry and Fergus welcome an unexpected client: Charlie Wild. Elsewhere, Harry is hired by a friend and former wild child turned nun, Lola stumbles upon a dance school mystery, a Dublin literary tour takes a bloody turn and more.

Meanwhile, Fergus' hopes of going to college at the same time as Lola are threatened when she gets an incredible offer to study abroad.  

In season three, Harry and Fergus are hired to prove the lead singer of Ireland's hottest boy band didn't kill himself, find out who decapitated a woman in a busy restaurant, discover who murdered a despotic director on the set of Ireland's leading daytime soap opera, work out how a mystery writer managed to shoot himself in a locked panic room without a gun, and more.

Meanwhile, with the agency still as busy as ever, Harry and Fergus have to find a way to balance work and life as Fergus plans to contest Paula's custody claim to his sister.

Season Two follows former literature professor, Harry Wild, who has found an unusual pastime in retirement: solving crimes along with her young partner in PI work, Fergus Reid. Together the wise-cracking pair investigate cases ranging from missing persons to murders, much to the annoyance of Harry's son, Charlie, who's a detective in the Dublin Garda. When Fergus's mother suddenly turns up, years after abandoning her family, they have a deeply personal mystery to solve: What are her intentions? And can he trust her?