A government aide kidnapped, a French diplomat murdered, a killer to uncover...

When mystery writer Marius Quin and his sleuthing partner Lady Bella Montague are hired by a secretive stranger to find a missing civil servant, they immediately set to work. Ernest Castleton was taken at gunpoint days earlier, but with the help of his distraught fiancée, Marius and Bella uncover a vital clue. Ernest hid a cryptic letter in the British Museum, and it sends the intrepid duo on a trail that stretches from the centre of London all the way to the English coast.

The investigation takes on a new twist when they arrive at the home of the British Foreign Secretary only to find a French diplomat murdered in the Grand Hall of the palatial property...

But who pushed Monsieur Rochefort to his death, and what does it have to do with Ernest Castleton's disappearance? Marius and Bella must choose from a nefarious spy, a double-dealing diplomat and any number of spoilt aristocrats if they wish to catch the killer. With the clock ticking and only twenty-four hours left before the suspects disperse, they must call upon their every skill to stop more innocent people from dying...

A fast, fresh and fun 1920s murder mystery which combines the feel of a classic spy novel with a twisting whodunit, The Castleton Affair will leave you guessing until the very last chapter.

Readers love the Marius Quin mysteries:

'My first book by this author but I absolutely loved it! Adored the period setting and how the 1920s were brought so vividly to life. This was a twisty-turny mystery that kept me guessing to the end... A cross between Agatha Christie and PG Wodehouse, this is an engaging, witty story that made me laugh and kept me hooked.' Reader review, ??????????

'Absolutely fabulous... While I hate to use the cliche of unputdownable, it really was. More of this crime fighting duo please.' Reader review, ??????????

'Jam-packed with lively wit, quirky characters, red herrings and cleverness. I felt an instant connection and was riveted to each page, even giggling out loud at times. Spellbinding books such as this are pure joy!' Reader review, ??????????

'A lovely cosy whodunit set in 1920s England... Lots of twists and turns and beautiful character development. A very cosy read!' Reader review, ??????????

'Charming, witty, and fast-paced.' Reader review, ??????????

Readers love Benedict Brown:

'Deserves 10 stars!... Not since Agatha Christie's Bertram's Hotel have I felt I was right there watching from the sidelines.' Reader review, ??????????

'I couldn't put this book down, and I didn't even come close to guessing "whodunit"! I wish it hadn't ended so soon.' Reader review, ??????????

'WOW Benedict Brown has done it once again... the ending was completely astounding, the perfect climactic twist.' Reader review, ??????????

'Kept me totally hooked until the last page... lots of twists and turns to keep you guessing.' Reader review, ??????????

'Deserves more than 5 stars. I really loved this book.' Reader review, ??????????

'What a great read this was!... Murder, mayhem,...