Lyndon James

Lyndon James, who went by the name Nathan "Nate" St. Germain, is a character in the Pretty Little Liars series. He is portrayed by Sterling Sulieman.

Biography
Lyndon is a young man who moves to Rosewood after the death of Maya St. Germain, under the alias of her cousin; Nathan "Nate" St. Germain. Nate comes to town as a Hollis College transfer student where he is studying to become an architect, and becomes fast friends with Emily. He was the stalker from True North that Maya talked about. It was later revealed that he killed Maya. He kidnaps and attempts to kill Paige as well, in order to get revenge against Emily for "stealing" Maya from him.

Season 3
Nate first appears in "Birds of a Feather." He shows up at the coffee shop at which Emily is now a barista. He introduces himself to her as Maya's cousin and asks if she has time to talk to him. Emily tells him it's her first day working and says she would prefer to call him later. He accepts and proceeds to tell her that he now lives in Rosewood and just started at Hollis College. Emily is a bit confused because Maya never mentioned she had a cousin coming to Hollis. We learn that Nate only applied but wasn't accepted in until after Maya's passing. He was really looking forward to hanging out with Maya again.

In "That Girl is Poison," an angry Nate stops by complaining to Emily about Garrett being let out of jail. Jenna starts flirting with Nate. While Paige and Emily talk, they see Nate walk in the door. Nate tells Emily about meeting Jenna the other night at The Brew. Paige appears to be jealous of Emily talking to Nate and starts to drink from a flask. Later, Paige falls down and hits her head, and Emily and Nate take her to the hospital. Nate asks Emily about her relationship with Paige, but then spots Garrett next to the elevator. Nate goes after Garrett, but is held back by the police escorts. During the commotion, Spencer jumps into the elevator.

In "Crazy," Emily gets a surprise visit at the coffee shop from Nate, to ask Emily's opinion on a candle. He tells her that it's for Jenna, a belated birthday gift he plans to give her at their upcoming date. Nate is under the impression she and Emily are friends, but Emily corrects him. Nate mentions that Jenna knew Maya because Maya gave her a ride to school a few times.

Nate and Emily walk into CeCe's boutique and CeCe greets them and tells them that they just got new scarves they might like to check out. While Nate is looking at the scarves, CeCe thinks the look on Emily's face means she likes Nate, but he's into another girl. Emily tells her she's got it wrong, and then CeCe figures out Emily is the one who had a crush on Alison, and likes girls. Nate then calls Emily over to ask her opinion on some earrings. Nate mentions Maya used to have a similar. Emily agrees and then asks how Nate knew that since Emily had given them to her only a week before her death. Nate makes something up about seeing them in a picture Maya had sent him. Emily then questions Nate again about why he is bothering to buy Jenna all these gifts. He responds by alluding to the fact he would be interest in dating Emily instead if she were into guys. Emily then gets CeCe and asks her to ring up their purchase.

Inside The Brew, Emily sits Nate down and tells him about Jenna and Garrett's past relationship, but he doesn't have the reaction Emily is expecting. He only seems concerned about Jenna’s feelings and tells Emily that she is a good friend for telling him the truth.

Emily leaves her job for the day and runs into CeCe who tells Emily that they should swap numbers. But instead she finds Jenna’s number, calls her, and yells at her to leave her "boyfriend" Nate alone. Emily is shocked at CeCe's boldness, but can't change what's been done.

Emily is later strolling the streets when she sees Nate sitting all alone in a restaurant. He looks hurt, as Jenna didn't show up their date because of CeCe's threatening call.

In "Stolen Kisses," Emily takes Nate to a place Maya loved to go to. They talked for a while. Near the end of the episode Nate appears at Maya's spot again and spots Emily there he said he wanted to see what the place was like at night. After Nate gives Emily some advice he gives her his jacket cause she was cold. Emily leaves still wearing Nate's jacket.

In "What Lies Beneath," Nate goes to the brew and asks Emily to go see Maya's old band since there back together, she says yes. Nate sees Jenna and Noel and decides to talk to her, Nate wants to at least give her the gift he never got to give but Jenna says no, because it wouldn't be right. After Nate gets angry he leaves the brew. Emily arrives home to see Nate on her doorstep, he apologizes to her about the way he had acting at the brew. Emily shows him Maya's bag and they start crying on each other. Then in the moment they share a kiss.

In "The Lady Killer," Nate is revealed to be Lyndon James, Maya's stalker. He threatens Paige and assaults Emily when she escapes him. He chases her to a lighthouse where Emily struggles to grab the knife. She manages to do so and, in the heat of battle, stabs Lyndon in the stomach.

It's assumed that he did not die right away, somehow shooting Caleb before his death.