Van Helsing and Athur went to the cemetery for seeing lucy's body but she wasn't in her coffin so they realized that she was a vampire. Before the night after comes, they went by her coffin and when she got out, they have killed her.
The men rescued Mina after Rainfield told them that he saw a shadow moving throw Mina's bedroom. They have found Dracula injecting his blood into Mina's veins.
Mina: it was all like a dream
After they have looked up for Dracula everywhere, they've found him in a box in a small street. When they opened the box, Dracula jumped out and they killed him with a wood stick. Mina returned to be a human and they finally broke the spell.