Dr. Waldman (Edward Van Sloan)’s Timeline and Summary

Dr. Waldman teaches Henry Frankenstein in medical school; Frankenstein joins the medical staff.
Frankenstein wants to create life and asks for access to dead bodies; Waldman says that's not possible, and so Frankenstein leaves the staff.
Frankenstein locks himself in his remote lab for months.
At the urging of Frankenstein's fiancée Elizabeth, Waldman goes to try to find out what Frankenstein is up to.
Waldman is there when Frankenstein brings a monster to life.
He's also there over the next days. He and Frankenstein discover that the monster has killed Frankenstein's assistant Fritz.
They knock out the monster with a hypodermic injection.
The two decide to destroy the monster. Frankenstein goes back to Elizabeth, and Waldman stays behind to dissect the monster and kill it.
Waldman begins the dissection, but the monster isn't dead, and strangles him.
Bad end for Waldman.