Reaper Man (Discworld, #11; Death, #2)

by Terry Pratchett

Mrs. Cake always assumed that an invitation to Ludmilla was an invitation to Ludmilla’s mother as well. Mothers like her exist everywhere, and apparently nothing can be done about them.

Light thinks it travels faster than anything but it is wrong. No matter how fast light travels it finds the darkness has always got there first, and is waiting for it.