Sherwell arrived at the Manhattan robbery squad on Wednesday afternoon to pick out from a police line-up the man who robbed her last Saturday night.
The attack was captured on the surveillance camera inside her apartment building elevator.
"Just to look at them inspires fear," Sherwell said.
The most recent robbery happened in Gramercy Park on Sunday. A camera again captured a picture of the suspect, Freddie Keit. In that case, police say he used a gun to steal a 22-year-old woman's purse.
Police say Keit also used a gun in robberies in the East Village and Far Rockaway.
All four victims were at the police line-up.
As for Yvonne Sherwell, the former actress and dancer showed us the new warning device she now carries to protect her from harm - a whistle.
Get Eyewitness News Delivered