You may recall that the most recent TV spot for upcoming Carlton Cuse/Guillermo del Toro FX series The Strain included some pretty horrifying images, particularly at the end. In the brand new behind-the-scenes featurette, we get a lot more grossness, but also a lot more footage, more explanation, more commentary, and happily, more Cuse and del Toro:

Featurette: The Strain – Inside The Strain: The World

Of course I’ve included another look at the TV spot:

TV Spot: The Strain – Countdown

The Strain, starring Corey Stoll, Mia Maestro, Sean Astin, David Bradley, Kevin Durand, Natalie Brown, Jonathan Hyde, Richard Sammel, Robert Maillet, Jack Kesy, Ben Hyland, and Miguel Gomez, premieres Sunday, July 13 at 10/9c on FX.