On Saturday, police say the man committed three robberies in less than an hour. The first one happened at BigFoot Java expresso stand in Bothell.
Diana Douay, who works there, says it was her co-worker who confronted the robber. When the barista didn't open the window, that's when the robber began banging on it with his gun, demanding cash.
"A guy approached her on that side over there and put the gun on the counter," says Douay. "It's put me on edge a little bit."
From there, police say, the man went to a Subway restaurant in Lake Forest Park. He wore a mask and showed a gun - then took off with cash.
A short time later he hit another Subway - this time in Shoreline.
"He lays a gun on the counter and says, 'Give me the register.' ... I didn't believe it," says victim Paul Beatty.
The entire robbery happened in less than a minute. It even went unnoticed by a woman and her children who were sitting at a table in the corner.
"He tried to keep it quiet - like he was trying to not alert too many people. You could tell by the way he was doing it," Beatty says.
The robber cleared the till and took off.
Police believe the man is connected to a string of similar robberies. They've linked him to at least 18 crimes in Kirkland, Everett, Renton and Mountlake Terrace, among others.
He often wears a hoodie with a handkerchief or mask over his face while demanding cash from the victims.
"It's a lot of adrenaline - like at first it's not even fear or anything. You just get this overwhelming need to get this guy out of the store. Get him in and get him out," says Beatty.
Police say someone was waiting in a car for the suspect during the robberies, but at this time they do not have a description of the vehicle.