by Laurie King. Sherlock Holmes in his later years has a young woman as his assistant & they continue to solve mysteries. Kind of light fare, but interesting. There are several books in the series......this is the first.

Laurie King also has another female sleuth series, the first being "A Grave Talent" which is next on my list.

Is anyone familiar with these?

which as I recall were quite good, one of those I've been meaning to get around to.