Channel 4's Crime Team lifts the lid on grisly murders from the crime history books.

Each week two celebrity sleuths, from politicians to art critics, turn detective; their powers of deduction tested to the full, pitted against investigators of another era with only the forensic tools of the time to crack the case. Starting at the real murder scene, they must ask the right question of adjudicator Jerome Lynch QC to gain the next piece of evidence, before naming their killer.

But immersing themselves in the historical period of the time, another picture emerges — often of social inequality and harsh justice. This website looks at the people and the influences at work.

And having learned how to chase leads and rule out red herrings, you can take the challenge and have a go at cracking the site's own murder mystery.