Previously, on Mr. Selfridge: Nine years have passed since Season 3, so we have to spend a bunch of time catching up with everyone including Harry (massive gambler, womanizer now), Grove (single parenting a pack of uncontrollable teens after Miss
Grantchester's Sidney Chambers is back on the case, but he's not the only moonlighting detective on British TV. From antique dealers to gardeners, check out our list of characters who solve murders on the side.