Our protagonists are Charlie and Nicola Buchanan (Shaun Micallef and Kat Stewart), who run an (Australian) industrial and crime scene cleaning business. But, TV being what it is, the show is primarily about how they solve the crimes for the local police (in the form of Detective Peter Vinetti, played by Jonny Pasvolsky) through observation, obscure knowledge, talking to people at the site, and the occasional house-breaking. Their niece Jess (Lucy Honigman) lives with them and almost always helps out.
In the first episode, Charlie and Nicola recruit Jess to work at the hotel where they were cleaning a room. As she's helping in the laundry room, we have this dialogue:
Unfortunately, it's never that funny again. It's an entertaining show, and fun for its run time (2013 only, 13 episodes of 46 minutes each) although they did overstay their welcome a bit. Charlie and Nicola are fun, eccentric, and intelligent characters who were a pleasure to be with for eight or nine episodes. By that time I'd got a bit tired of their constant breaking into people's homes and rifling through their stuff to solve cases. (I also missed episode 12 as the Toronto Public Library DVD set was unreadable on that episode.)