Dismally grim and exploitative, this series about a murderer who posted online reviews of the tools he used to carry out his crimes is just the kind of television to avoid like the plague

Right, you ’orrible lot. That’s quite enough seasonal goodwill for you. Time to get back to business. Your first new true-crime documentary of the year is here: The Amazon Review Killer.

It is the dismally grim tale of estate agent, sex offender and serial killer Todd Kohlhepp. He was convicted in 2017 of seven murders and has since said that he is responsible for many more, though he has not given the authorities any details.