TV Guide Alibi

The reportedly accidental death of a factory girl found mangled in the machinery is referred to Phryne and Dot by a dubious Dr MacMillan. When a second fatality occurs, the duo must fight to save a close friend from being framed for murder. Drama, starring Essie Davis and Ashleigh Cummings

A young nun is found dead in a smoke-filled bedroom in what seems like a terrible accident caused by a lit cigarette. But when Richard deduces it must have been murder, there are no shortage of suspects, including other nuns, a priest and the mother superior - as well as an unscrupulous PR man promoting a holy spring in the convent grounds. The question is, with the room locked from the inside, how could anyone have committed the crime in the first place? Kenneth Cranham, Patrick Baladi and Caroline Langrishe guest star

Humphrey and his colleagues are called to a neighbouring private island whose property developer owner has been shot dead at a family gathering. Five people are in the frame - the victim's housekeeper, his PA and his three children - although when an approaching hurricane strands the cops on the island, knocking out the phones and computers, they are forced to rely on good old-fashioned investigative techniques. As evening approaches, the cops realise they will be spending the night in a house with a killer. Can they solve the mystery before he or she strikes again? Jimmy Akingbola (Holby's Antoine Malick) and Nikki Amuka-Bird (Luther) guest star