Horizon takes viewers on an extraordinary journey into the human memory. From the woman who is having her most traumatic memories wiped by a pill, to the man with no memory, this film reveals how these remarkable human stories are transforming our understanding of this unique human ability.

This PBS medical series explores illnesses one at a time and features a panel of physicians and other experts assessing individual cases. Crossword puzzles, vitamins and classical music have all been promoted as tools for improving memory. Panelists discuss the recent theories and research surrounding memory enhancement and help viewers ...