Continuing this week is the fourth series of the hit
drama following a team of special agents who

investigate Navy and Marine Corps-related
crimes. In this episode, Gibbs and the team try to
find out who was responsible for an explosion
which killed two NCIS agents. Initially suspecting
a suicide bomber was to blame, the team is
baffled when some confusing new evidence
comes to light and changes everything.
After receiving an anonymous tip-off from a man
who claims to know something about an
imminent terror attack, NCIS agents Jim Nelson
and Richard Hall enter the building to meet the
caller. Outside, Agent Paula Cassidy parks the car
and prepares to follow them in – until she is thrown
backwards by a blast that consumes the building
and kills Nelson and Hall instantly.
Gibbs and the team arrive at the scene,
accompanied by a distraught Agent Cassidy. “It’s
my fault,” she sobs. “I killed my team.” Gibbs
takes her aside and reminds her that she needs to
put her grief on hold for now – first they need to
catch whoever is responsible for this atrocity. At
first, it seems as if they are too late to do so: the
horrifying sight of a dead man who has been
blown apart indicates that they are dealing with
the aftermath of a suicide bomb.
Suddenly, two men appear at the doorway and
ask what happened. They explain that they work
at the building, the headquarters of a Middle East
peace group, and recognise the dead man as
their leader, Yahzeed Fahad – who they claim was
not the type of man to do something like this. “He
was a man of peace!” insists one of the men. “He
despised suicide bombers as cowards, agents of
evil! And now you wish us to believe that he was
one of them?” Their theory is that Fahad was
forced to strap on the bomb by somebody who
wanted to sabotage an international peace
meeting scheduled for the next week. “How many
will attend when they hear the man who planned it
was a suicide bomber?”
Strangely, Ducky’s autopsy reveals that Fahad
was dead at least a day before the explosion. But
Abby’s analysis of the calls made to the tip hotline
begs to differ: the voice on the tape is an exact
match to Fahad’s, and Cassidy swears that she
saw Fahad walk into the building seconds before
the bomb went off. Ducky claims that he would
stake his career on his findings, and Abby and
Cassidy refuse to back down – but somebody has
to be wrong.
Tony and Cassidy return to the scene in search
of hidden doors that would explain how the real
bomber got out of the building, which only
appears to have one way in or out. They discover
that there was a concealed doorway through to
the shop next door, and when Cassidy finds
shards of the sunglasses the man she saw had
been wearing, it is clear that this is how the real
bomber escaped.
A print on the sunglasses points the team to
Salman Umar, a colleague of Fahad’s, but when
they go to the office to bring him in a shootout
ensues and Umar ends up dead. When Abby
takes a look at the computer Umar had been
using, she finds out that he had replicated
Fahad’s voice using sophisticated software...
which is how Fahad seemed to be able to speak
to Cassidy from beyond the grave.
With the mystery solved, Gibbs and the team
then agree to provide protection detail at the
planned peace meeting, and at a memorial
service for Fahad and the two fallen agents.
However, it becomes clear that the bomber did
not act alone... and that one of his accomplices
has a devastating surprise in store.