That Sinking Feeling

Unsolved: A Friend in Need is a quest in the Fallout 76 add-on Wild Appalachia.

It will be available for download on April 8, 2019.

Quick walkthrough
Involves finding the following holotapes/notes:
 * Letter to L
 * C.H. Monthly, January
 * A new day
 * Day 95
 * Scoot's journal: Part 1