Hello everybody! 
I come from Greece and I have been to lovely Serbia a couple of times before. 
I am currently trying to write a mystery novel that will take place in Serbia based on the tradition of the creatures you call drekavac (we have similar beliefs in Greece too)  and I am trying to find information about them in the internet. 
I found a few videos in Youtube that look like clips from documentaries (3-7 min) that talk about drekavac but I cannot understand what they say.  
Is it possible for anyone in here to translate a few for me or at least transcribe in serbian what they say (and then I will google translate)? 
The videos are 
 
 
 
Thank you in advance