A DNA match brings relief to Linda O’Keefe’s sister, four decades after girl’s slaying

Cindy Borgeson was eating a cheeseburger at In-N-Out when she got a call from Newport Beach police that she thought would never come.

It had been more than four decades since her 11-year-old sister, Linda Ann O’Keefe, was sexually assaulted and strangled. The killer had vanished after dumping the…