The Devil's Due Quest
To start this quest you have to explore the Museum of Witchcraft and find a body of Sergeant Lee inside a small room.
Related points of interest
Stages of "The Devil's Due" quest
1. Listen to Sergeant Lee's holotape
I found a holotape near a butchered Gunner body. Maybe it can explain what happened here.
2. Take the egg
Seems this crew of Gunners were transporting a case full of Deathclaw eggs from Lynn Woods, but only one survived the trip. I should collect it.
3. Complete delivery of the egg
These Gunners were delivering a case of Deathclaw eggs from their nest in Lynn Woods to Diamond City. I've got a decision to make - complete delivery or return the egg to its nest.
If you decided to complete the delivery then take the egg to Wellingham at Colonial Taphouse, Diamond City Market. As a reward you will receive Wellingham's Recipe.
3.1. Quest completed
4. Return the egg to its nest
These Gunners were delivering a case of Deathclaw eggs from their nest in Lynn Woods to Diamond City. I've got a decision to make - complete delivery or return the egg to its nest.
If you decided to return the egg.
Put the egg into the nest. Do it quickly, then deathclaw won't attack you.