But who's the father? And why can't she look after Alyssa?
In the market, Zack takes Alyssa off Martin but as he walks off her toy drops and unbeknownst to him a girl watches on. Who is she?
Later, both Zack and Martin receive their paternity test results. But what will the tests reveal?
After Alyssa's toy is dropped off, Zack scans the area and sees a girl. Once him and Sharon catch up to her, she tells them her name. Her name is Jayda and she's Alyssa's mum! And whe she reveals who the father is, Sharon and Zack are both shocked.
In the café, Zack gets Jada to open up and she explains how she can’t look after Alyssa.
EastEnders continues Mondays, Tuesdays, Thursdays and Fridays on BBC One