In this natural history Halloween special Professor Alice Roberts overcomes her arachnophobia to enter a house filled with hundreds and hundreds of spiders. Inside she meets spider-loving entomologist, Tim Cockerill, who quickly immerses Alice in the wonders of web building, the secrets of fly-catching and the dangerous spider-eat-spider world they inhabit. Using innovative macro photography, and collaborating with some of Britain's best arachnologists, this one-off ninety minute documentary for BBC4 reveals the secret life of spiders in the home.