While engaged in a mission to destroy sslyth breeding grounds and stall their invasion of Imperial territories, Zameon Gydrael encounters an ancient foe of the Dark Angels Chapter - one of the legendary Fallen.
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It's not easy being a Dark Angel. Keeping all those secrets is tough enough even amongst other Dark Angels, but in the Deathwatch, it can be deadly. When Gydrael spots a Fallen in the midst of a vital alien-hunting mission, his decision to place Chapter above duty probably isn't going to end well for him... or anyone else.