The way they are talking about the water in the pool slowing and deforming the bullet and also the mention of 8 feet for a .45 to be stopped correspond with the test results that the Mythbusters found in episode S3E14 in the myth about Bulletproof Water from 2005. So it seems like the writer(s) of this episode did their homework very well.
Apart from that I found the overall story of this episode pretty good, the new intern is properly quirky and still likable (unlike the one introduced in last season who was annoyingly arrogant and didn't have any redeeming features to make him likable at all).
The part with the mother and daughter at the start, who found the body, was pretty satisfying. You'd want to toss the mother into the well yourself with how she wanted to take advantage of the child, and her ending up stuck at the bottom of the well (with the corpse) because the child tossed the ladder into it had that 'serves her right' feeling.
Apart from that I found the overall story of this episode pretty good, the new intern is properly quirky and still likable (unlike the one introduced in last season who was annoyingly arrogant and didn't have any redeeming features to make him likable at all).
The part with the mother and daughter at the start, who found the body, was pretty satisfying. You'd want to toss the mother into the well yourself with how she wanted to take advantage of the child, and her ending up stuck at the bottom of the well (with the corpse) because the child tossed the ladder into it had that 'serves her right' feeling.