You need to talk to the cops first.

trials for maxamine? no, around the country elsewhere
pharmacists? Just one.

Poof you have a new location - a Pharmacy with Leda Callisto in it!

Sophia here? Check, no could be over-counter customer.
Maxamine? Don't know. Yup! One order, filled picked up.
By who? Dr. Edward Wilkinson.
Last seen? Not a while. Downtown office.

Yup, you guessed it, time to head downtown.

CSI Crime scene Investigation Walkthrough