In retrospect I don't get why FX bothered to greenlight this show.
The horror genre is among the least popular genres in books and film so taking on this genre on TV even with the success of the Walking Dead is a risk. While in the case of movies inspite of the low popularity it has always been a great investment vehicle because the audience that have been appealed to so far get by with low production values.
The first two episodes of the Strain look like they are more expensive than all of the past horror movies made. That money was well spent in providing excellent atmosphere, varied locations to make the whole situation look larger scale than it is and the props succeeded in making the Strigoi believable.
Yet the Strain has one of the things that continued to make the horror genre in film (don't know enough about books) feel like a subpar experience and that is the terrible writing. The Walking Dead for all of its problems some people like to moan about had great writing and acting to deliver what was written down.
The writing on this show is very hit or miss and the episodes are expensive looking (though with this most recent episode they saved a ton of money by sticking to one location)
Sometimes the writing was bad through no fault of the actors. Case in point is how the episode ended with the vampires crashing down the roof. The way it was shot was a clear homage to the Aliens' scene. The hamfisted in a homage scene that really didn't need to be done.
The show is entertaining and has some awesome moments but I still wonder how FX thought this would be a good idea when they consistently try to make well written smart shows for the first 3 seasons.
Another thing that bothered me: Even though they didn't get to use it, it was a good thing both those cars had the exact same lug patterns so they could just swap the wheels!
But that plan failed in the end so the point is moot.
TERRIBLE episode
Every character were making and saying the most non-believable things. The store clerk had to be the dumbest thing written for TV this year, dunno where to start.
Actually the store clerk was one of the better things going on in this episode.
The vampire outbreak was still an unknown threat. THis was made clear by the old guy restocking the bread that evening. Bread isn't something you can hold onto for long which means it had to have been delivered that day. Up until the vampires attacked everything in the world seemed to be working normally aside from some annoying hackers.
Secondly if you have ever worked in those type of locations where you need to hide behind security glass well you start falling into the mental trap that this is the safest location. He had no compelling reason to leave that spot with so much craziness going on.
Thirdly from his vantage point he couldn't fully see what was happening. He could tell people were dying but he couldn't see how horrific the attackers were up until they swarmed the place.
As for his idiocy about the stolen goods and calling the police even though he knew getting them would be very difficult well his behavior fits his expectations in the first point I made. He thought everything was relatively normal with society functioning. All he had to do was hold out in his bunker and he can explain to his boss later how he couldn't handle being overwhelmed by looters.
Everyone else though had some even worse inexplicable reactions to what was going on around them.