Countless visitors flock to Cozumel Island, this small, sultry oceanic land mass sits just 12 miles off of Mexico’s Yucatan Peninsula and is home to several endemic species of birds, reptiles and mammals. However, there is one uninvited guest that has been recently wreaking havoc on the island but is unable to leave: the Boa constrictor. Although the island has a range of wildlife, these boas were not part of Cozumel’s original biodiviersity recipe. Sightings of boas have only been reported over the past thirty years – a mere fraction of time on the ecological scale. National Geographic’s constrictor expert Jesus Rivas teams up with local researchers to study the origin, and the consequences, of this reptilian disaster - before it gets any worse.