British author, television presenter and wildlife expert, Nigel Marven, travels the world to find the deadliest species of snake. In each episode Marven travels to a new country or continent and reveals the top 10 deadliest snakes that inhabit that region. From Costa Rica's black-headed bushmaster to South Africa's infamous black mamba, China's king cobra to Mexico's terciopelo, we uncover the most dangerous snakes on our planet. Known for his bold and impulsive approach to animals in the wild, Marven must be on full alert, as a bite from these slithering serpents could paralyse or even kill him. Director: Alex Minton (2017)