I realize this will make me sound like a grumpy old person, but I hate these modern day interpretations of Sherlock Holmes. They always portray Sherlock in the most non-Sherlock way, getting married and turning him into an action hero. It's just unnatural.
So I was pretty wary but everything turned out okay after all. The mystery / sinister secret was completely obvious from the very beginning so that was a bit of a let down. And no one can demonstrate Sherlock's deductive reasoning in the same way as Arthur Conan Doyle - whenever anyone else does, it just feels stupid and obvious. "You deduced I was on a tropical island for two weeks because I have sunburn yet it is winter here in England, and also I am carrying a suitcase? YOUR POWERS OF DEDUCTION ARE MIND-BLOWING!!"
But it was tolerable in that I didn't spend every five minutes thinking, "Sherlock Holmes would NEVER DO THAT!!!!!" Sherlock would totally get fake high and get arrested for murdering someone outside an opium den and then escape from prison via ingenious means. Such a Sherlock thing to do.