The Kid-Kidnapper

The Kid-Kidnapper refers to an unmarked quest in Fallout 3.

Detailed walkthrough
Once the player character has been to Little Lamplight, they have the option to talk to Eulogy Jones about kidnapping one of the children there which in turn nets the player character this assignment. Convince Bumble in Little Lamplight to follow the player character the child slaver waiting outside, either by passing a Speech check or by using the Child at Heart perk.

Reward
Eulogy Jones rewards the player character with the Boogeyman's hood.