But what brings the two old friends back together?
Returning from Ireland having had some funny turns, Dot confides in Sonia who advises her to make an appointment with her GP. As she waits anxiously at the doctor’s surgery. Jack pays her a visit and sensing something isn't right, she makes a confession.
Jack helps Dot get a second opinion on her health, but she isn't convinced. But she does get an ides to meet an old friend she can trust, Doctor Legg.
After being reassured by Doctor Legg, Dot invites him to Robbie’s birthday party, only Robbie is nowhere to be seen.
After a warm welcome, Doctor Legg and Dot fondly reminisce about the Square, but Dot is taken aback when Doctor Legg reveals some shocking news.
EastEnders continues Mondays (8pm), Tuesdays (7:30pm), Thursdays (7:30pm) and Fridays (8pm) on BBC One