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Simmons becomes infected with an alien virus after exposing herself to a group of people that have come into contact with a Chitauri helmet.


Vincent Misiano


Stan Lee (based on the Marvel comics by), Jack Kirby (based on the Marvel comics by) | 4 more credits »




Episode cast overview, first billed only:
Clark Gregg ... Phil Coulson
Ming-Na Wen ... Melinda May
Brett Dalton ... Grant Ward
Chloe Bennet ... Skye
Iain De Caestecker ... Leo Fitz
Elizabeth Henstridge ... Jemma Simmons
Vincent Laresca ... Tony Diaz
Titus Welliver ... Felix Blake
Robert Maffia ... Baker
Rick Gifford ... Adam Cross
David Michael Paul ... Justin
Thomas Robie ... Camper #1
Trevor Larcom ... Camper #2
Caleb Burgess ... Camper #3
Jake Brennan ... Camper #4


Simmons becomes infected with an alien virus after exposing herself to a group of people that have come into contact with a Chitauri helmet.

Plot Summary | Plot Synopsis


TV-PG | See all certifications »

Parents Guide:

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Release Date:

5 November 2013 (USA) See more »

Company Credits

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Technical Specs

Sound Mix:




Aspect Ratio:

16:9 HD
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Did You Know?


The Chitauri helmet prop had to be created from scratch because all the Chitauri soldiers seen in The Avengers (2012) were purely computer-generated. See more »


After examining a fried brain, Simmons says it's been hit by 2,000 mega Joules of electricity, and notes that is almost double the power of a lightning bolt. Albeit there is no real minimum or maximum power for a lightning bolt. All lightning bolts vary wildly in power so the concept of double the power of a lightning bolt makes no sense. See more »


Grant Ward: I wanted it to be a person, some super-powered psychopath - someone I could hurt, someone I could... punish. That I could do. What I can't do is protect you guys from stuff I can't even see or understand.
See more »


References The Big Lebowski (1998) See more »


Agents of S.H.I.E.L.D. Theme Song
Written by Bear McCreary
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User Reviews

You've been beside me the whole damn time.
29 July 2017 | by jhudson-11704See all my reviews

Finally, a truly great episode by Agents of Shield. And I'm really glad it allowed to showcase the chemistry between FitzSimmons. These two characters, as Skye said in the episode, are practically "psychically linked". These two actors work so well off each other and I would hate for them to be separated. I also liked the Avengers reference with the Chitauri, it was significant but not overdone.

Let's start with the two stars of this episode, Fitz and Simmons. In this episode we get to see even more how great these two work well together and how much they actually mean to each other. Both of these actor showed great emotions, Simmons not wanting to hurt or kill her friends and her clear bond with Fitz. Fitz was even better as he showed his desperation over how much he needs and, let's just say it, loves Simmons. When she drops out of the plane, Fitz, tugging on the door, screaming and freaking out about how he's going to save her despite never skydiving pulled at my heartstrings. I'm actually pretty glad that it was Ward to go and not Fitz, Fitz would've stressed out in the moment. And Simmons telling Fitz afterwards that he was the real hero for helping her find the cure and not Ward who jumped out of the plane to administer it.

I also really liked the Avengers reference came into play. It was very cool to see the Chitauri helmet, not only just mentioned. The fact that normal people, let alone emergency services, have alien technology was looked into in the one shot Item 47. In fact, Titus Welliver's Agent Blake, who appeared in Item 47, even showed up which is a cool acknowledgement of that.

Also, major credit to Gregg's performance in this episode, especially the scene where he comforts the dying firefighter. Him saying what he felt when he died was truly powerful and has pressed me even more into finding out how exactly he is alive.

One tiny flaw in this episode is that it was pretty obvious that the head wound was external not internal, but at least they found that out, although it took a while. I am, however, glad that it wasn't just another weapon or powered person, but in fact a disease. That was a welcome twist as it helped focus on FitzSimmons. It also showed another side to Ward being vulnerable and weak.

+ Henstridge and de Caestecker's performance + FitzSimmons relationship + Gregg's performance, especially in the firehouse + New type of threat + Well done connections to Avengers

Final Score: 9.3/10

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