Conversation so far:
What's relevant about the twilight years?
For the Sandman, the series depicted him as an old, thin man with a balding scalp and a sharp wit.
Are there any other interesting aspects about this article?
During Zero Hour, Dodds is returned to his proper age by the Extant.
What is Zero Hours?
Wesley Dodds is shown as retired and living with Dian Belmont though occasionally coming out of it, most notably in a team-up with Jack Knight.
Who is Jack Knight?
the son of Dodds' JSA teammate Starman.
Does he fight crime during his Twilight years?
Towards the end of his life, Dodds' prophetic dreams alert him to the identity and location of the new Doctor Fate.
Does he go after Doctor Fate?
the new Doctor Fate, only for Dodds to distract Mordru with his gas-gun long enough to commit suicide by jumping off the cliff.
What else is notable about his diminishing age?
His last thoughts were that his final slumber would be free of nightmares as he is reunited with Dian.
Was this how he died?
commit suicide by jumping off the cliff rather than allow Mordru to torture him into submission.
When did he commit suicide?
CANNOTANSWER.

Question: Who is Mordru?
Self-contained rewrite: In Sandman, who is Mordru?