Jonathan Jackson paid tribute to his Nashville co-star Hayden Panettiere with a heartfelt note.

Jackson played Panettiere’s husband Avery Barkley in the musical drama throughout the show’s six-season run.

“I have no words to express the loss of our beloved Hayden,” read the Instagram post. “She had such a bright light within her. She was a sensitive soul. Incredibly funny and witty. Amazingly gifted, with a great sense of empathy and compassion.”

He continued, “We both grew up in the industry, although she started even younger than me, but we shared that. A silent knowing of how intense the struggles can be. She was an absolute joy to work with. Focused, spontaneous and brilliant. The most important thing between friends and coworkers is trust, and we had this. Elisa and I both love and cherish her deeply, like our own sister. She holds that place in our hearts.”

Panettiere and Jackson’s characters in Nashville had a roller-coaster ride. Avery and Panettiere’s Juliette Barnes meet in the first season, and the magnetism they radiate is seen from the start. Their characters eventually marry, and they have a baby. Juliette then suffers from postpartum depression, addiction, and a near-death experience following a plane crash. Despite their on-and-off relationship, in the end they decide to stay together, as their love withstands it all.

“My prayer for her every day we worked together was that she would know how loved she is, and that she would find the peace that she was looking for. It’s not possible to express the shock and grief that so many of us feel right now,” Jackson added. “Our humble prayers are with her family. May God’s angels carry you to your place of rest and true peace. We love you Hayden. You will always be in our hearts. Always.”

The end is near for Yellowjackets. The fourth and final season of the Emmy-nominated series will premiere on Friday, November 20 on Paramount+ premium tier. The streamer also released a teaser which you can see below.

In the final season, as the survivors race to bury their sins before rescue arrives and an old flame roars back into town with plans of her own. Turns out not every homecoming is a joyous one, and this one’s going to sting.

Created by Ashley Lyle and Bart Nickerson, Yellowjackets is the saga of a team of wildly talented high school girls soccer players who become the (un)lucky survivors of a plane crash deep in the remote northern wilderness. Equal parts survival epic, psychological horror story and coming-of-age drama, the series chronicles their descent from a complicated but thriving team to savage clans, while also tracking the lives they’ve attempted to piece back together nearly 25 years later, proving that the past is never really past and what began out in the wilderness is far from over.

Season four stars Emmy nominee Melanie Lynskey, Christina Ricci, Tawny Cypress, Sophie Nélisse, Jasmin Savoy Brown, Sophie Thatcher, Samantha Hanratty, Courtney Eaton, Liv Hewson, Warren Kole, Kevin Alves, Sarah Desjardins, Nia Sondaya, Jenna Burgess and two-time Oscar winner Hilary Swank.

Yellowjackets is executive produced by Ashley Lyle and Bart Nickerson, who also serve as showrunners.  Drew Comins of Creative Engine also executive produces along with Jonathan Lisco, Jeff W. Byrd, Sarah L. Thompson, Ameni Rozsa and Julia Bicknell. The series is produced for Showtime by Lionsgate Television.