But is it wrong to be an armchair detective? Baby Reindeer has inspired TV fans to unmask the real-life inspiration for stalker Martha. Some worry that this might hurt the vulnerable.
Low budget true story becomes TV smash hit
Whodunit?: Baby Reindeer, starring comedian Richard Gadd (above) follows struggling comic Donny Dunn. Glossary
Netflix - A television and film streaming service. People pay each month to watch programmes on Netflix.
Harassed - Being given unwanted attention.
Stalker - When somebody repeatedly contacts or surveils another person, often against their wishes.
Conspiracy theories - Theories that explain world events by blaming shady groups of powerful people operating in secret. Some conspiracy theories have a basis in fact, but many more of them are completely invented. What is more, they often play on dangerous prejudices such as antisemitism. It's worth being especially cautious and critical when you come across accounts that ascribe enormous agency to small and secretive groups.