Joe Mayo and Merry Martyn / PBH's Free Fringe Merry Martyn PhD and QI Elf Joe Mayo have discovered they’re Mortal Enemies. Their life expectancies suggest they’ll die in the same year, but each is determined to prove they can outlive the other. Watch two nerds go head-to-head with competitive PowerPoints, use data to find your nemesis, and ultimately Duel! to the Death! 'A must see for all fellow nerds! The true essence of nerdiness' (Tom Crosbie). Audience participation, Scenes of violence, Strong language/swearing Age category: 16+