A remote Japanese island holds a horrifying secret. Rumor has it that birds fall victim to insects they view as prey: praying mantises! The Darwin crew set out to investigate and soon come face to face with the 8-centimeter-long predator, the largest mantis in Japan. Not much escapes its clutches, armed with rows of spines that both draw in and hold prey fast. But ... birds? Elsewhere, the team is equally shocked to find mantises parasitized into becoming walking zombies by their internal hosts!