Airdate: Wednesday.30.March.2005
Tuesday

At an upscale nightclub in Havana, Cuba, Sydney invites a man to dance. It's
her informant, and he tells her that the Third Faction is planning a large-
scale attack on a civilian target. He also tells Sydney where a hard drive
containing more information could be found, which Dixon soon retrieves.
They're being watched, however.

As Syd travels to the airport, Vaughn, over the phone, promises her a slow
dance. Suddenly, attackers shoot Syd's driver and the car crashes.

Dixon arrives at APO with the hard drive. Since Marshall is late, another
agent is tasked with the decryption. When the drive is plugged in it sprays
a toxin in the office, causing Dixon to go into a seizure. He's given an
antidote and the office is locked down.

As Marshall arrives in the parking lot, he phones Sloane to tell him that
the firewall networks are still secure. Sloane asks Marshall to stay on the
line as they contact Sydney.

The ringing phone wakes Syd. To her horror, she realizes she's been buried
alive, the dead informant beside her. Jack advises her to stay calm -- but
that help won't be coming for the next 36 hours while the office is locked
down. Marshall volunteers to go to Cuba and track Sydney's cell phone with
a Radio Frequency locator.

While Dixon recuperates, Sloane tells the rest of the team that the Third
Faction has enough toxin to infect an entire city. Despite their
predicament, they must still discover the target city and prevent the
Cyclosarin bomb from detonating.

Marshall arrives in Havana and creates his makeshift RF Locator. Sydney
takes a photo of the dead informant and sends it through her phone to APO.
Using the picture, the team links the dead man to Ulrich Kottor, a
significant figure in the Third Faction, and the man who kidnapped Syd.

Syd's phone dies as Marshall arrives at the cemetery. Marshall realizes
there are too many fresh graves for him to search. He asks Vaughn to direct
a satellite over his position and change the view to thermal, figuring it
will pick up Syd's body heat.

Marshall digs frantically, finally opening the coffin and finding Sydney
unconscious. He performs CPR. After a few tense moments, she opens her
eyes. An exhausted Marshall drops to the ground.

In the office, Sloane reports that they have acquired information about
Ulrich. Since an attack is imminent, Sydney needs to get to Ulrich, find
his hard drive and upload the contents to APO so they can stop the
detonation. Sydney responds by saying that Ulrich knows her from Havana,
and that they need to send someone else in: Marshall.

Syd advises Marshall on the spy game. Marshall, assuming an intimidating
pose as Jack Bristow, walks inside Ulrich's private room and commands his
attention. He tells Ulrich that one of his men is betraying him. As
his "cigarette case" scans Ulrich's laptop, Vaughn reports from APO that
they still can't access the data, and that Marshall must go to the basement
with Ulrich in order to force him to shut down the network firewall. As
Marshall tries to subtly assemble the gun he brought, he accidentally
shoots and kills Ulrich. He calls Syd for help.

From the APO office, Jack instructs Marshall to dig out one of Ulrich's
eyes. Sydney arrives and, using the eye, they bypass the retinal scan in
the basement security system. Marshall then starts downloading from the
hard drive and transmits intel to APO while Syd covers him. Later, Sloane
reports that the Ministry of Security confirmed the seizure of the
Cyclosarin bomb in downtown Hong Kong.

Sydney drops Marshall off at his house and he invites her in for dinner. A
grateful Sydney refuses, saying that she needs to go the train station. At
the station, Vaughn arrives. They slow dance in the middle of the train
station, blissfully unaware of the bustling world around them.

SEASON 4 (FOUR)
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| 5 | 6 | 7 | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16|
| 17 | 18 | 19 | 20 | 21 | 22|

SEASON 5 (FIVE)
| 1 | 2 | 3 | 4 | 5 | 6|
| 7 | 8 | 9 | 10 | 11 | 12|
| 13 | 14 | 15 | 16 | 17 |