Nina Bulsara (played by Wendi Peters) tries to solve the mystery of a tragic past love story on today's standalone episode of Doctors (1:45pm - see our TV Guide for listings).
Nina and her son Suni (Rahul Arya) visit an antiques shop during a day out together.
Suni is worried about just how competitive Nina is going to get, in haggling for a bargain!
At Montclair Antiques, Nina wastes no time in locking horns with the owner, St John Montclair (Simon Butteriss).
Nina's got her eye on an antique brooch... and she wants it for a fair price!
However, Nina is not the only one who has taken a liking to the brooch...
Betty Wheatcroft (Gillian Axtell) enters Montclair Antiques after spotting a vintage record player inside.
But while St John is busy with Nina, Betty secretly STEALS the brooch!
St John is outraged when he finds out and calls the Police!
Meanwhile, Nina follows after thief Betty, who seems to be on a mission to get somewhere...
When Nina realises Betty has recently been a hospital patient, she tries to find out more about Betty's situation.
As the episode flashes back to the 1950s, Betty tells Nina her story...
And all about the romantic developments between Young Betty (Evangeline Ward-Drummond) and her friend, Frances Proud (Isa Wood).
But WHAT happened on that ill-fated day when the lovesick teenagers planned to runaway to London together?
As Betty shares her story of love and heartbreak, in the present day will Nina manage to find out WHERE Betty is heading for and WHY?
Doctors continues Monday to Thursday at 1:45pm on BBC One.
All the latest episodes are also available to stream through BBC iPlayer