After The Letter UNDER EDITING!
When Gideon resigned from the BAU, he left the Doctor Spencer Reid a letter, explaining himself and why he left. But he also left a picture of a girl special to him;
He asked the young doctor to take care of her while he was gone, and to keep her company. Gideon asked Reid to meet with her at the local park that weekend to meet with her.
Jason left Sierra a note explaining another case to her, just like all the ones before; but this one broke him. Sierra is confused when she finds a picture in her letter of a man around her age;
He asks her to meet with Spencer at the local park, saying that they would get along well, and that Reid would be there for the time being until Jason returns again.
Will Sierra and Spencer keep each other close for the sake of Jason Gideon, or will love hatch, and they will be close because of love?