Matty Blake returns to Oak Island and gets an insider's look at the staggering new operations brothers Rick and Marty Lagina have launched in their efforts to finally solve the 224-year-old Oak Island mystery.

For nearly half a century, Dan Blankenship and Fred Nolan worked tirelessly to solve the Oak Island mystery. Were it not for a bitter feud between them, they just might have succeeded.

Television icon William Shatner joins the team in the war room and gets a first-hand look at how an obscure island off the coast of Nova Scotia has become a global phenomenon.