Property Manager's "client list"

[Jennifer Baldassari]

We are purchasing properties from a family friend who had her rentals under the "care" of a horrific property manager.  The more I learn, the more I'm shocked to learn of what the PM has done/not done.  At any rate, is there a way to find out what other clients this property manager has so that we might contact them to see if they would like to sell??  I'd bet (just a guess) that some owners either don't know what's going on (?) or the property is so bad now they think no one will be it for more than two dollars or they are embarrassed (as our friend is/was) to make a move and let others see how terrible they were taken advantage of.  I'd love to unload these owners from this PM and their property nightmare(s).