Tsia Mosely

Tsia Mosely was a minor character in Criminal Minds

Background
Tsia Mosely was a former Interpol Agent that was part of Emily Prentiss former team that helped to catch Ian Doyle. The team consisted of Emily Prentiss, Sean McCallister, Clyde Easter, Jeremy Wolff and Tsia Mosely. At some point she and Jeremy were in a relationship and got married.

Coda
By the events of Coda Sean McCallister and Jeremy Wolff had been killed by Doyle, and Pre

Prentiss called Tsia and Clyde to help her track down Doyle and kille him. They met at a train where Emily told them that Doyle was in the United States and that he was after her. Tsia and Clyde advise her to tell her BAU team, so that they would help them in tracking Doyle, but Emily refused not wanting to put them in danger. Later in the day the three of them comunicated by disposable cell phones at a plaza, Tsia told them she was devastated that she could not attend to Jeremy's funeral. They told Prentiss that that they started their quest of Doyle, having Tsia used her contact in Washington D.C. to track him through one of his alias and found out about his travel schedule. Using one of his alias, Tsia and Clyde managed to found Ian Doyle and told Prentiss about this.

Valhalla
In Valhalla Prentiss started to distrust Clyde because he didn't tell her that Doyle was imprisoned in Corea and not in Russia. Prentiss believed that Clyed was no longer of trust and that he was hiding information to them, so she instructed Tsia to meet her at a location. But when Tsia arrived she was shot in the forehead and killed by Doyle, thus leading to the believe that Clyde was the mole. When the BAU discovered Tsia's body, Prentiss was devastated that her dear friend had been killed.

Lauren
It was revealed that it was in fact Jeremy that was the mole for Doyle and not Clyde.