The sketch is 10-years-old now, but authorities say the suspect likely has similar features.
Eric Birnbaum, 51, stepped out of his car on Feb. 11, 2009, to walk into his office off of Buck Road in Holland, Pennsylvania.
It was a warm morning.
He turned and briefly said hello to a colleague, and that's when authorities say a white man with black, curly hair and wearing a ski cap, came up behind Birnbaum and shot him in the back of the head.
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Witnesses reported seeing a blue minivan speeding away south on Buck Road, towards Feasterville.
Someone inside the personal injury law firm, Terry D. Goldberg & Associates, called 911, and moments later, an ambulance pulled up with police cars following behind.
While medics tended to Birnbaum, authorities looped yellow crime tape around trees, securing the scene, and started to pull aside witnesses to interview.
They also put out a "flash" or "be on the lookout" for a blue minivan to other area departments on police radio.
Meanwhile, Birnbaum's best friend, Terry Goldberg, got a call saying that he needed to get to the law office immediately.
Goldberg called Birnbaum's sister in California. She called her parents in Florida, and they all jumped on the next plane to Philadelphia.
Hours after the shooting, Philadelphia police pulled over a blue minivan on I-95, with the driver matching the description of the shooter.
They brought the man down to the Philadelphia police headquarters at 8th and Race streets for questioning, which he willingly went.
But after a few hours, the interview ended when detectives confirmed a solid alibi: The man was dropping his child off at school at the exact moment Birnbaum was killed.
Birnbaum's family arrived in Philadelphia and drove up to a Bucks County hotel. That's where Goldberg delivered the worst news of their lives: Eric was dead.
Over the next few days, the Birnbaum family planned his funeral. Birnbaum's sister, Dona, met with the lead investigator, Northampton Lt. Charles Pinkerton, for coffee at a local diner a few mornings and they went over every aspect of Eric's life.
Weeks later, the Birnbaum family went home with no answers.
Now, 10 years later, still without answers, detectives are hoping something breaks soon.
Authorities have surveillance video that has been analyzed over and over, but cannot get a clear image. Though they don't want to expand much on it, they have recovered DNA and enter it into the national database every few years.
And now, they need a break.
If you have any information about what happened on Buck Road on Feb. 11, 2009, please call Northampton Township Police Department at 215-322-6111.
You can also submit an anonymous tip.