Uriel was a young man born in Townville who used to spend all of his money (and his nights) partying in some of the Downtown nightclubs. After he realized that he didn't have enough money to live, he got a job at an aircraft factory called Neilplanes.
Evan Day went to talk to Joseph Gand, an upholsterer, so that he repaired his sofa which was quite broken. Unfortunately, they found a bloodstained plane seat in the upholstering workshop, and after sending it to the police laboratory it was discovered that Uriel's dead body was inside of it. Later, the team found out that the plane from which the seat had come was the BHX-419 also known as "the ghost plane" in that moment because it had disappeared and nobody could find it. Uriel's girlfriend, Yazmin Lucas, who was a flight attendant, was also interrogated.
When all of the evidences were ready, the team arrested Mark Neil (Uriel's boss) for having killed him. He confessed and said that he had been arguing with Uriel because he did his job very poorly, and he put a wrench to his face to hit him, and unable to control his anger, Mark squeezed Uriel's nose. Before he could stop to see what he was really doing, Uriel was already dead. He stuffed a plane seat with Uriel's dead body and later took the plane to Joseph's workshop to make it look like he was the killer. He was sentenced to 70 years in jail with no chance for parole (he said that life imprisonment would be actually the same as he probably wouldn't be able to survive for 70 years).
Before dying, Uriel had left a box of chocolates in the ghost plane for Yazmin, which the team found and gave to her.