Something different ( spoilers )
At this point I am always looking for something different when it comes to so called thrillers. Something other than, you know, Liam Neeson chasing down yet another bad guy, etc, so for that reason alone I really liked this movie. And I have no problem with implausibility; most movies are preposterous if you think about them too hard. Having said that, how could Martin Landau's character possibly know or even think that sending Zev on this mission would produce the desired outcome? For all he knew, these two eventually meeting each other may have caused Zev to remember everything and the two of them could have had a jolly old time reminiscing! Wouldn't it make more sense to kill Zev himself? That way he would know for sure that at least he got one of them.
I know, I know... Then we wouldn't have a movie. I understand that. I'm just sayin'.....