Relatively Dead

Carol Golden has recovered her identity if not her memory (lost in Forget to Remember) and she would like to find more relatives. She discovers cousins with the last name of Boyd and finds they are apparently being targeted for murder. In addition, her grandmother is developing Alzheimer's Disease and has been a victim of the "Grandparent Scam," losing a lot of money to someone in Los Angeles who is impersonating Carol's dead brother.
Carol travels to Los Angeles from her home in North Carolina to attend a memorial service for one murdered cousin and to try and determine whether the scammer and the murderer are the same person. However, she finds out soon after her arrival in L.A. that somone doesn't want her sticking her nose into any of this.
A group calling itself The Syndicate is promoting what looks suspiciously like a Ponzi scheme, and at least one of her cousins could be involved, bilking people out of their money. Is there a connection to the murderer here? Will Carol become disillusioned about her relatives? Maybe she would have been better off not finding them.