Overall it is a well scripted spy drama, characters well written, acting is very good, good casting as well, worth a watch. However, the pace slows down a bit too much at times. I felt there were occasions when the writing was over the top or lazy. Lamb is such a dick to everyone in the team. This part was overdone to the point of not being plausible. The bunch of misfits are supposedly in the 'Slough House' due to slipping up in their career at some point, but the makers want us to think they are actually good secret service agents/spies. However, at one point I felt River deserved to be in the Slough House, when he left an axe within arm's reach of the wounded kidnapper/assassin/murderer. I am sure MI5 will agree this is covered in their basic training. Such inconsistencies are the deal breaker between a good show and a great one.
Review of Slow Horses
