After finding a group of teens dead from a drug overdose, the team races to find the dangerous dealer and his supplier. Meanwhile, OA questions where he stands in his faith.

Owen is conflicted when his brother Robert asks him for help; Judd and Grace face a family crisis; As T.K. and Carlos prepare for their wedding day tragedy strikes.

As new discoveries are uncovered in the triangle-shaped swamp and on Lot Five, the Oak Island team makes an incredible revelation in the Money Pit.

Owen is conflicted when his brother Robert asks him for help; Judd and Grace face a family crisis; As T.K. and Carlos prepare for their wedding day tragedy strikes.

The Fly Team jets off to Portugal when the daughter of a prominent American hotelier becomes the primary suspect in the murder of an employee. Also, Raines becomes concerned about Vo.

Sig returns from his mother's funeral only to find his gear in harm's way. Rick and Keith forge a beneficial partnership. Jack makes his first offload as captain. The Coast Guard gets a call to extract a sailor with broken legs 200 miles out to sea.

The Fugitive Task Force searches for a missing migrant teen they believe was lured into unlawful work by a dangerous man. Also, Remy learns of a previously undisclosed witness in his brother's murder case.

Peter is once again tormented by his father, Peter the Great's expectations and his failure to continue the legacy of his empire. Catherine must decide what to do about the unrest being stirred up in the regions, but Velementov is in no state to help her.

First Lady Lucy takes up her latest cause: a benefit concert called "Quench the Stench" to eradicate a pervasive and putrid odor plaguing D.C.

Nora and JJ team up to create a Beatles-inspired documentary about the band's album-making process.

In the aftermath of Ryu Seok's ploy, 5-8 plans to take him - and Cheonmyeong - down. Having finally achieved his dream, Sa-wol takes up his first mission.

Get your orders ready, it's time for the first Service Challenge of the season. Two teams, aided by mentors Matt Sinclair and Sashi Cheliah, must cook an Entree and a Main course dish for 30 diners.