With all the sky-high ratings and good words about the previous season of the show, "Orphan Black" is now back with its fourth season.

As the premiere of the season 4 approaches, BBC reveals more details about what fans should expect through its promotional materials.

When BBC America President and General Manager Sarah Barnet made the disclosure about the renewal in June last year, she said: "Orphan Back is an entirely fresh and original show that stands out even in today's crowded TV landscape."

Den of Geek reported that the upcoming season will consist of 10 episodes, with several callbacks to some of the most thrilling moments from "Orphan Black's" previous seasons.

One trailer reveals that the upcoming season will see the recovery of Rachel and the discovery of Leekie's body. Kira Manning will also resurface in season 4, with several other guest stars joining the lineup. To top it all off, there is Sarah returning home from her hidey-hole in Iceland to search for Beth Childs. In the trailer, she will chart Beth's footsteps as she associates herself with an intoxicating new enemy. This seems to hint at an impending trouble for the lead character and her "seestras."

In an interview, co-creators of the series, John Fawcett and Graeme Manson, said: "We're thrilled to be moving forward with season four of the 'Orphan Black' saga. Huge thanks to our partners Temple Street Productions, and to BBC America and Space. We're extremely excited about where our story lines are going, and look forward to riding the rollercoaster with our amazing fans."

Episode 1 of "Orphan Black" season 4 will air on April 14, Thursday, at 10:00 P.M. on BBC America. Watch the trailer below.