Title: Postmark murder
Description: From the inside flap:

"A return from the grave.  He was supposed to be dead. Yet here he was, swearing Laura to secrecy...  It took her a while to really believe he was alive.  And by that time, he wasn't...  Now she could be sure of only two things:  The police suspected she was the murderer... And the murderer knew she must die..."
Subjects: Fiction, mystery & detective, general, Illinois, fiction, Chicago (ill.), fiction, March, laura (fictitious character), fiction