I happened to come across something useful today...

It is found tt:"Women use their eyes to communicate interest in a man. Men, on the other hand, will usually avoid eye contact with a woman they are interested in."

I believe we can use the above theory on the properties of men & women to decipher the Parkway gal mystery. According to this theory, every gal tt Heatsink avoids eye contact with is a possible suspect. So, we'll jus have to keep a lookout for this particular gal who looks at Heatsink with the most loving pair of eyes from this list of suspects and we've hit the jackpot.

Cool huh. Ok pp, start looking!