The Young Widow by Cassandra Chan

Phillip Bethancourt and Jack Gibbons Mysteries

Jack Gibbons, an ambitious Scotland Yard detective sergeant, investigates the fatal poisoning of successful businessman Geoffrey Berowne, aided by his best friend from university days, Phillip Bethancourt, who's a wealthy man-about-town with a nose for crime. The chief suspect is Berowne's attractive wife, Annette, whose previous two husbands, both much older than she, also died under odd circumstances. When Gibbons rather predictably starts falling for Annette, he seeks another solution to the murder, despite everything pointing to the young widow as the killer.

A cross between Dorothy L. Sayers and Agatha Christy set in modern day but it had that kind of feel. It was a lot more complicated that I thought it would be but I did enjoy it. I'm looking forward to another endeavour to see how this duo works out.