Logan M. was the former assistent of Savannah Woodham.
Shadow at the Water's Edge
In Shadow at the Water's Edge, Logan was visting a Technology Expo with his boss Savannah Woodhem, when he meets Bess Marvin, there with her cousin George Fayne. And he gets a crush on her. Nancy at first tries to call Savannah and Logan picks up, saying that Savannah would not like to be bothered and then he hangs up on Nancy.