Orphan Black is coming to an end. BBC America’s breakout original series has been picked up for a fifth season, which will be its last. BBC America and Canadian network partner Space made the joint pickup of the Tatiana Maslany-starrer for a 10-episode fifth and final season to air in 2017. The news comes as the Season 4 finale of the praised sci-fi series airs tonight on both nets.

“Orphan Black is a thrilling, genre-bending ride that has captured our fans’ imaginations and hearts like no other show,” said BBC America president Sarah Barnett.

Added co-creators John Fawcett and Graeme Manson, “We are excited to deliver an epic conclusion to the tale of Sarah and her clone sisters. The past four seasons have been a phenomenal adventure and we are eternally grateful to our loyal fans who have loved the twists and thrills of our weird little show. We are thankful to our partners at Temple Street, and to BBC America and Space for their support and giving us the opportunity to end on a high.”

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It all started on a train platform. A troubled woman, Beth Childs (Maslany), locked eyes with an unknown identical woman, Sarah Manning (Maslany), before jumping to her death. From that day on, they’ve been inextricably linked to a clone conspiracy that has come to rule Sarah’s life. The cast includes Maslany, Ari Millen, Jordan Gavaris, Maria Doyle Kennedy, Skyler Wexler, Kevin Hanchard, Evelyne Brochu, Kristian Bruun and Josh Vokey.

Orphan Black, which helped put BBC America on the original scripted series map as its first homegrown hit, is produced by Temple Street in association with BBC America and Space. Executive producers are Ivan Schneeberg, David Fortier and Kerry Appleyard of Temple Street, and Graeme Manson and John Fawcett. Orphan Black is distributed by BBC Worldwide.

The network’s next original scripted series Dirk Gently’s Holistic Detective Agency, starring Sam Barnett and Elijah Wood, is in production and will premiere October 22.