Shrouded Manor

Shrouded Manor is a side quest in the Fallout 4 Creation Club content "Shroud Manor."

Walkthrough
Read the terminal at Police Precinct 8 to learn about a sting operation by the Boston Police Department, with a contact point at the Warren Theater. Afterwards, pick up the Warren Theater key, which is found in a nearby desk and unlocks a dresser in the theater.

Head to the theater, take the elevator to the second floor, and open the dresser behind the stage to collect Officer Isola's note and the key to unlock Shroud Manor. Once they have been collected, several Triggermen will spawn on the first floor of the theater (though they may ride up to the second floor and attack) and must be killed. One of them, Tony Suiza, carries a password which is necessary to unlock a terminal in the basement of the manor.

Shroud Manor is located near the Cambridge Police Station and consists of three floors, with several hidden areas behind bookshelves. Exploration of the manor is unnecessary, though an upstairs terminal can be read to receive the miscellaneous quest Silver like the Shroud. The next step is to head to the secret basement of the manor, which is accessed from a hidden door behind a bookshelf in the entrance hall. Two Triggermen will attack in the basement. Head to the large security door in the backroom of the basement and use the terminal to open it. Large amounts of pre-War money and five bars of gold can be found immediately. Enter the next few rooms and kill Candy. The Silver Sidearm and silver wedding ring can be found nearby.

Afterwards, head back into the basement and activate the workshop to unlock Shroud Manor as a player home and complete the quest. Several unique settlement objects and furniture pieces will become available after the quest is completed.

Bugs
If you pick up the silver wedding ring before reading Trevisani's hidden computer terminal, attempting to drop the ring after receiving the "Find the wedding ring" prompt will give a "Quest Items cannot be removed from your Inventory" message and the ring cannot be dropped.