Dispatches investigates this growing crimewave. Plus: it’s getting very hot in the kitchen for the MasterChef final. Here’s what to watch this evening

8pm, Channel 4
There are some real grinches out there: a parcel is stolen in Britain every seven seconds. Reporter Tir Dhondy is on a mission to get to the bottom of the crimewave by hiding tracking devices in parcels and following stolen ones to challenge who took them. He also learns how gangs target delivery vans as part of their business model and gets access to a major police operation. Hollie Richardson

The Clueless icon plays an aggressive lawyer in sinister series Irish Blood. Plus: Ant and Dec’s ridiculous new challenge show. Here’s what to watch this evening

9pm, Sky Witness