VIENNA, Va. (WUSA) -- A year ago Monday, off a busy street on a busy Sunday afternoon in Merrifield, police found a beautiful, vivacious teenager stabbed to death.
Despite scores of interviews and investigative man hours, detectives still cannot figure out who murdered Vanessa Pham.
One of the 19-year-old's favorite spots was the Vienna Town Green, where she picnicked with friends just days before she was murdered.
So friends thought the would be a great place to get together with her family and try and relive some of the positive memories -- to push aside the nightmares of that awful day a year ago when they learned someone had killed her.
There's a bench they've emblazoned with a plaque in her honor and decorated with flowers. They drew chalk designs -- Vanessa had just finished her freshman year in art school.
But it's hard to forget her killer is still out there. And they want to call attention to the fact that the reward for information leading to an arrest is now up to $21,000 -- thanks to the generosity of friends.
"It's hard to fathom," says her high school friend Sarah Cole, " a year later... and still no justice."
"There is someone out there who is evil," says Pham's cousin, Tracy To. "It could happen again to someone else's daughter or sister."
Usually stabbing -- especially repeated stabbing -- are commuted by someone with a relationship to the victim.
But police say they've interview friends and family, and checked Vanessa Pham's social networks, and they just don't think it was someone close to her.
Written and Reported by Bruce Leshan
9News Now & wusa9.com