As the finale of Reacher Season 4 is just a few days away, fans are discussing one of the biggest highlights of the series: Chris Rodriguez-Marquette's Jacob Merrick. While the ongoing season is divisive, even the harshest critics have admitted that Marquette's Jacob Merrick is the best part of the fourth season.This is why his performance is back in the spotlight as Marquette revealed an interesting behind-the-scenes factoid about his casting in the Prime Video action series. Turns out, the actor was cast at the last minute, but ended up being the highlight of Reacher Season 4.Reacher Season 4 - Chris Rodriguez-Marquette was not the first choice for Jacob Merrick: View this post on Instagram Instagram PostA few weeks ago, the Barry and Reacher Season 4 actor sat down for an interview with Collider, in which he revealed the situation that led to his casting as Jacob. If you remember, Jay Baruchel dropped out of season 4 last June due to an emergency. The Tropic Thunder actor was the first choice to play Jacob this season until he had to drop out.Marquette revealed that he received a call from his agent on a Friday night. At that time, the actor was in Ireland spending quality time with his family. He was asked to make an audition tape in 15 minutes by showrunner Nick Santora. It seems that last year, he auditioned for his Reacher role on that Saturday, got cast on Sunday, and he immediately flew to Toronto to start filming on Monday.This shocking revelation has fans even more impressed:Marquette's revelations only earned him more fans who already liked him this season. Fans had already described his acting as "flawless performance", "human", "vulnerable", and "incredible".The comments in the reel | Image Via: Instagram/@colliderThe comments section on the Collider reel has one throughline: Chris Rodriguez-Marquette brings in the vulnerability to Jacob. His character has been through a lot since the very first episode of Reacher Season 4. He has probably lost his family, as his sister and nephew are dead. Plus, he is up against dangerous forces like the CIA and an Indonesian terror group.Now that Marquette revealed that he just had 15 minutes to memorize a scene from the first episode, fans are even more impressed. A fan on the Instagram reel described him as one of this season's highlights:"Tbh he's one of the best parts of season 4, really bringing emotional weight into the story."This appreciation says a lot because the fourth season has its detractors. Even when a scene featuring Marquette's character was under fire for a continuity mistake, the actor himself never got any hate.Are you disappointed that Jay Baruchel dropped out of season 4? Even if you were disappointed, you will get to see Baruchel in Reacher, as he is a part of the fifth season, a casting that Chris Rodriguez-Marquette confirmed in the Collider interview.