Tonight marked the end of Castle's eight season run on ABC. Though fans are upset to see the popular procedural solve its last case, Castle (Nathan Fillion) and Beckett (Stana Katic) ultimately ended up together, happy, and with a family of their own.

Nathan Fillion makes a special request to fans for his life after Castle

Executive producers Alexi Hawley and Terence Paul Winter wanted to cap off the show's run with a happy note of their own. Below the two showrunners deliver their thanks to fans for helping to keep the show on the air for eight seasons. See what they had to say below.

While we're still trying to process all the emotions stirred up by recent events, the feeling that stands head and shoulders above all else, is gratitude.

Eight seasons. A hundred and seventy three episodes.

None of it would have been possible without you — our loyal and passionate fans. You are the reason this show survived and thrived. Without you carving out "Castle Mondays" every week, we would never have been able to make the show we love for as long as we did.

So thank you.

And thanks to Andrew Marlowe for creating such a delightful world, centered around a love story for the ages. It was an honor and privilege to shepherd the story of Castle and Beckett this season.

And finally, thank you to our cast and crew, who have been our family for these last eight years. Who elevated every script by investing the best of themselves into each episode. We will miss you profoundly.

Alexi and Terence