Three Little Words by Joan Jonker

In the backstreets of Liverpool, best mates Molly Bennett and Nellie McDonough are up to their usual tricks. And, as always, they're keeping an eye on their children and grandchildren who mean the world to them. But they're never too busy to help out a friend, so when Claire Thompson attracts a mysterious admirer it's clear to Molly and Nellie that their detective skills are required.