Here is what I think will happen:
Dev and charlie have a run in over a double booking at a hotel. Witnesses hear Dev say to charlie "i'll kill you"
a week later.....
Shelly will have a drunken fumble with charlie and find herself HIV positive.
When Bev returns, she is hell bent on seeking revenge. She invites Charlie round for dinner, (to make amnends) but she poisons his glass of wine with cyanide. He sips the glass, and falls to the floor.
She and shelly carry the body out the rovers and bury it in the red wreck. However, trajedy strikes ones again when poachers are shooting rabbits in the wood, and a bullet hits Bev. She falls into the hole with charlie. Shelly has no choice but to cover up both bodies and return to the street.
While walking Monica, Tyrone stumbles across the bodies 5 months later. As the investigation goes on, witnesses come forward about dev's attack on charlie. He is found guilty, and imprisoned for life.
Both devestated by the men in their lifes, Shelly and Sunita end up lesbian lovers, get married in the rovers, then head of to manchester which concludes a dramatic year in the street.