By Jasmine Allday Dean Wicks will take revenge on Jean Slater on EastEnders next week after his sick secret is exposed. Jean has been helping Jade with her fundraiser but she is actually very ill, with Dean messing with her medication. Whilst viewers know what Dean is doing, the Square is completely unaware and are concerned about Jade struggling with her health. Next week on the BBC soap, Jean is left shocked when she sees Jade back in the square so soon after going to hospital after she collapsed during the fundraiser at the Queen Vic. Dean leaves Jean in charge of Jade and making sure she’s…