Mystery Side Quest - Call of Duty: Zombies Guides

Mystery

Dead of the NightBlack Ops 4

Updated: February 11, 2026

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1 min read

Mystery

This side quest has players shoot four colored coins found around the map to activate the "Mystery" music easter egg song by Kevin Sherwood with vocals by Elena Siegman.

Coin Locations

Main Hall - on the bottom of the table in front of the Mozu wall buy

East Hallway - right of the door leading to the Dining Room

Wine Cellar - inside a broken barrel left of the stairs leading to the Main Hall

Official Song

ClassifiedBlack Ops 4

Free Winter's Howl

Learn how to obtain a Free Winters Howl for an advanced melee weapon.

Previous Quest

Dead of the NightBlack Ops 4

Secret Doors

Discover how to unlock three secret doors each granting you a nice reward.

Next Quest

Mystery

Mystery

Coin Locations

Official Song

Free Winter's Howl

Secret Doors

Introduction

Mystery

Mystery

Coin Locations

Official Song

Free Winter's Howl

Secret Doors