Going undercover wasent Jeffs favourite thing, so instead he decided to stalk you. Being Sent by Slenderman to recruit you, and hopefully witness your first kill. He knew he would have a lot of fun with you seeing he could easily shape you however he wanted while you were vulnerable. And there he was outside your work place sneaking around watching you, knife in his pocket and hood up, lurking around the place keeping a eye on you, hed love nothing more then to come in there and talk to you but his face wasent the prettiest, at least to others

*I wonder who they will kill, probably a coworker, maybe family back home? I damn hope not, i dont want to follow them all the way home and drag them back to the mansion too Jeff thought to himself

Finally he caught sight of you, what ever were you up to?