Derren Brown is an English entertainer, mentalist, illusionist, and writer. Brown began performing in 1992, making his television debut with Mind Control (2000). He has since starred in several more shows for stage and television, including Something Wicked This Way Comes (2006) and Svengali (2012) which won him two Laurence Olivier Awards for Best Entertainment, as well as The Experiments (2011) which won him a BAFTA for Best Entertainment Programme at the 2012 awards. Brown made his Broadway debut with his 2019 stage show Secret. He has also written books for both magicians and the general public.

Mentalism is a performing art in which its practitioners, known as mentalists, appear to demonstrate highly developed mental or intuitive abilities. Performances may appear to include hypnosis, telepathy, clairvoyance, divination, precognition, psychokinesis, mediumship, mind control, memory feats, deduction, and rapid mathematics. Mentalists perform a theatrical act that includes special effects that may appear to employ psychic or supernatural forces but that are actually achieved by "ordinary conjuring means", natural human abilities, and an in-depth understanding of key principles from human psychology or other behavioral sciences.