Yes, Jess is a main character in the fourth season of the television series “In the Dark”.

In the series, Jess is portrayed by Brooke Markham. She is the best friend of the main character, Murphy Mason (played by Perry Mattfeld), and is often the voice of reason for Murphy. Jess works as a veterinary technician and is a loyal friend who is always willing to help Murphy in her investigations.
Season 4 of “In the Dark” follows Murphy and her friends as they investigate the disappearance of a friend’s sister. Along the way, they get involved in a dangerous game of cat and mouse with a drug kingpin named Josiah. Jess plays a significant role in helping Murphy and the others uncover the truth behind the disappearance and take down Josiah.
Throughout the season, Jess is portrayed as a strong and capable character who is willing to do whatever it takes to help her friends. She is often the voice of reason and helps to keep Murphy grounded during some of the more dangerous and risky moments of their investigation.
In addition to her role in the investigation, Jess also has her own personal storyline in season 4. She struggles with her relationship with her girlfriend, Vanessa, and must decide whether or not to forgive her for cheating. This subplot adds depth to Jess’s character and shows her vulnerability and emotional side.
Overall, Jess is an important character in season 4 of “In the Dark” and plays a significant role in helping to uncover the truth behind the disappearance of the missing girl. Her loyalty, strength, and compassion make her a valuable member of the team and a beloved character in the series.