This show is absurd and its relationship to anything Sir Arthur Conan Doyle wrote is a ripoff at best ; it’s a patchwork of Sherlock ,and ideas taken from various other stories, such as Frankenstein and even Dr Who.
That said, the acting is quite good and the characters draw one in so you can’t stop wanting to find out what happens to them and hope they solve the problems of the universe and live happily ever after . It is one of those shows that requires a suspension of disbelief and it is rather entertaining. The twists the plot takes vary from predictable to “oh no !!! Yikes I wasn’t expecting that !! “
I will continue to watch it. It’s a good escape from daily reality .