Sunny Randall, at one time, was a policewoman, but now she is a private investigator. She has dealt with local gangster Tony Marcus before when he helped her out of a jam. Now Tony needs Sunny to find one of his girls, Lisa. Tony took her off the street and now she is Tony’s girlfriend and business partner.  But she's missing and Tony thinks Sunny is the only person who can help him. Sunny tells Tony she will do what she can to help him find Lisa, but she also hopes that this will be the last time they have to work together. 

Sunny is also dealing with the fact that her boyfriend Richie’s ex-wife, Kathryn, has returned to town with their son, Richard. Sunny is shaken up by this because this is the woman Richie married after they broke up the first time. How will Richard fit in their lives? as this is the woman he married after they broke up the first time. Kathryn decides she wants time to herself and leaves Richard with them. Sunny isn't sure if she will be a good stepmother, but she cares about Richie and will try her best. 

Now the hunt is on to find Lisa. Sunny has a hunch that another gangster, Jabari, has something to do with Lisa's disappearance, but he swears he has nothing to do with it. Sunny then speak with one of Lisa's friends, Callie, who may have information about Lisa's whereabouts, but Sunny later learns that Callie has been murdered after their conversation. . . With so many suspects, will Sunny be able to discover what happened to Lisa and how everyone may or may not be involved? 

I have to say Robert Parker/Mike Lupica has become one of my favorite writers. Lupica took over writing some of the books that Parker had outlined after he passed away, and the new books are just as thrilling as before. I hope a sequel to GRUDGE MATCH with Sunny will come out soon. There is so much more to learn about her story.