Tucked just off of Fallston Road, this recreation complex is readily accessible to people throughout Harford County and to those who may try to prey upon them.
"For me, it's very disconcerting, because my son does tennis here,” said Amy Coyner of Fallston. “My kids go to school right over there. So with thinking that I can just let them play wherever, I'm probably not going to let them do that anymore."
This, after a pair of teenaged girls playing on one of these same courts encountered a stranger last month who was as cordial as he was creepy.
"The man tried to initiate conversation. He began asking them some questions about family. Then (he) started talking to them about tennis and their tennis game and said he'd like to come back and play tennis with them some day," said Cristie Kahler, a spokeswoman with the Harford County Sheriff’s Office.
Police are quick to point out a game of tennis may have been all that he was after, but they've stepped up patrols around the complex and they're not taking any chances.
"Nothing criminal happened that day. There wasn't any sexual conversation,” said Kahler, “It just struck the girls as being suspicious. It struck them as being odd. It was something that they wanted to talk to their parents about and we will continue to investigate to see if we can investigate that person and see what their intentions were."
It is a level of vigilance now shared by those who have always felt safe at the complex until now.
"It can happen anywhere. Definitely. It's a shame that I've lived in Harford County all my life, and you think it's safe, but it can happen anywhere," said Maureen Martin of Bel Air.
If you have any information on the mysterious man in the blue convertible, you're asked to call the northern precinct at 410-692-7880.