This week's cover: We go around the world with Game of Thrones 

Three countries. Ten days on set. One show—perhaps the biggest TV series in the world. For the fifth season of HBO’s

, EW undertook an epic adventure to join the fantasy hit’s cast and crew for a globe-trotting all-access tour of Westeros and Essos to discover how the acclaimed mega-production pulls off bringing author George R.R. Martin’s savage world to life—and what new twists season 5 has in store. We got to see Peter Dinklage and Lena Headey acting up a storm in Croatia, endured fan mobs and biting serpents with Nikolaj Coster-Waldau in Spain and hung out with Emilia Clarke and witnessed the loss of a cast member in Northern Ireland—all while chronicling what’s certain to be a game-changing season.

“Worlds are colliding,” says David Benioff, who is showrunner along with Dan Weiss. “One of the things we’ve been most excited about from the beginning of the series is we’ve had all these fall flung story lines across Westeros and Essos which almost never cross. Now some of these characters start to head on a collision course for each other.”

And that new tragetory will have an unexpected body count. Characters that are still alive in the books will die this season (don’t worry, our coverage is spoiler-free). Key storylines will deviate from Martin’s narrative in controversial ways. There’s even another wedding. Or two. Actually three (

). “With each season, the stakes get higher and higher and the war gets bloodier and bloodier,” says executive story editor Bryan Cogman. “We’re in season 5 and there’s an expectation for big events and consequences.”

This week’s cover story is a revealing must-read behind-the-scenes adventure for any

fan, and just part of our mammoth coverage in this week’s issue. We devoted an unprecedented

plus have four different collectable covers

 Pick up this week’s issue on newsstands or digitally subscribe now.

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