When Shamilar struggles with the man in the vault you can see that there are only two canisters on the floor and in the room. However, when it switches to the view from Jesse's computer, it shows two canisters on the floor and one in the hole in the wall.
Brennan's game of Roulette doesn't make sense at all. For example, he bets one stack of coins on 28, black, and on winning, gets two stacks extra. One of these is a different color of coins (red), but he should get 35 times what he bet as a profit. Then he bets three stacks of the same color (which he doesn't have) on the 2nd 12, and wins when the ball stops on 30, which is in the 3rd 12. He gets exactly what he bet, only half of what he should get if he did win. With the next bet, he again has the stack of red coins, and only 5 stacks of the other color, which, according to his last bet, he should have 6 of.
So how did the Tiger survive his ten-story fall?
(Lexa kisses him)
Brennan: Wow, what was that for?
Lexa: I just wanted to get that out of the way. Now you don't have to wonder what it would be like, and you won't have to think it'll ever happen again. Stay out of my way, Brennan.
Lexa: You really don't want to know.
Shalimar: Or you really don't want to tell me.
Lexa: You're catching on.
Shalimar: I know a lot about hunting. You know the best part? The anticipation. The stillness. Waiting for your prey to show yourself.
Brennan: I bet you'd have done better if you were there.
Lexa: I couldn't have done worse.
The Tiger: I think I'm going to enjoy killing you.
Lexa: You already missed your chance.
Mystery Sponsor: Be careful, Lexa – don't get in over your head.
Lexa: I was born there.
Lexa: You switched the canister, right?
Jesse: Well, there might have been a little...
Shalimar: Shut up, Jess.
Lexa: What – a little what?
Shalimar: I got the right one.
This is the first time we've seen Brennan run out of juice.
Jesse doesn't use his powers, and seems limited to computer work - from watching this episode you'd have to wonder if he's even a mutant.
Actresses Dale and Odell were both in the first season episode "Crime of the New Century," although they both play different characters here.