Are Canadian tourists in the Mayan Riviera at risk of getting caught in cartel cross fire? Investigative reporter Avery Haines gets rare access to a Mexican drug boss, for a far-reaching and disturbing interview that airs as part of her W5 documentary, "The Narco Riviera" (watch below).

"Manuel" agreed to meet with W5 to talk about the cartel turf war that has led to a record number of murders in a Canadian tourist mecca. Warning: details may be disturbing.