The Will Trent series premiere came out of the gate swinging with special appearances by Mark-Paul Gosselaar and Jennifer Morrison, with Gosselaar continuing to show up sporadically throughout the rest of season 1, but an update regarding his involvement in season 2 is rather disappointing. The ABC police procedural crime drama television show revolves around a unique agent in the Georgia Bureau of Investigation (GBI) with various special talents and a traumatic past — Will Trent, played by Ramón Rodríguez. One of the people from the protagonist's horrific childhood was Gosselaar's character, Paul Campano.
https://screenrant.com/will-trent-season-2-mark-paul-gosselaar-not-return-disappointing/