This is the first one of the series that I have read - Maisie Dobbs in 1930 London.
An artist Nicholas Bassington-Hope has fallen to his death within an art gallery and his twin, Georgina needs to determine whether it is an accident as the police have said, or more. So she is directed towards a fellow graduate from Girton College, Maisie Dobbs, psychologist and investigator.
Really enjoyed reading this and the portrayal of the characters, so I will be looking out for another in the series. Thankfully it seems that they are stand-alone books.