Hacker I "Dirty job" Mystery Cache

Received: from charles.telenet-ops.be (LHLO charles.telenet-ops.be)
Nov 2020 23:23:19 +0100 (CET)
Received: from mail-lf1-f45.google.com ([209.85.167.45])
From: N19H70WL <n19h70wl@gmail.com>
Date: Wed, 11 Nov 2020 23:23:07 +0100
Message-ID: <CANiwgipCXmQyDvG=Tqu8EjhyQAdtLeNTMxL3VReNdwoB8XcFAg@mail.gmail.com>
Subject: Group alert
To: teambirdyblack@telenet.be
Content-Type: multipart/alternative; boundary="000000000000dbc06c05b12f70f4"
Content-Type: text/plain; charset="UTF-8"
This message was sent by an automated emergency system.
If you receive this I'm either dead, captured or hiding off-grid.
The whole group, including you, might be compromised.
Proceed with operation Darkwing without me if possible.
N19H70WL
--000000000000dbc06c05b12f70f4--

Check your solution

Real hacking is illegal and is not needed to crack this mystery.
You do not need to install any tools or download ZIP or EXE files.
To follow the story, take on the mysteries of this series in the order given.
This may at times be required because prior knowledge may be needed.