But what has she been hiding?
When Mo announces that she’s been invited on a cruise with Fat Elvis, Jean asks why she isn’t going and Mo admits it’s because of her. There’s something not right with Jean and she’s worried.
After managing to convince Mo to go on the cruise, by lying about why she’s been acting so odd, Jean and Kat throw her a going away party.
Catching Mo acting shifty around the garage, Jean spots a police car pulling up on the Square and the thought of saying goodbye to Mo hits Jean as she mutters to herself that she may not be around when she returns, which Zack overhears.
Later in The Vic, Jean is agitated by what Mo has revealed to her and Zack watches on, clearly concerned.
As Jean and Kat bid a tearful farewell to Mo, Zack waits for Mo to be gone before asking Jean what she meant earlier. Jean shrugs him off and asks if he can help her.
EastEnders continues Mondays, Tuesdays, Thursdays and Fridays on BBC One