Lord Theodore Harrow has watched three of his closest friends fall in love and suffer for it, but now they are content, and he is left on the outside. When an accident brings him face-to-face with the woman of his dreams, he hopes his single days will be over, without the drama. Mrs. Valeria Wilson is not looking for another husband to replace the one she buried with great relief. Now, while trying to hide from her evil father-in-law and protect her young son, the last thing she needs is a peer of the realm pursuing her.
Captain Jared Allendale is weary of war, but Wellington gives him one final assignment before he is free of his obligation to the Crown: retrieve a package in Scotland and return it safely to London. Easy assignment for a man who's been an aide-de-camp for the past several years - until the package turns out to be Lucy Cameron, daughter of the Duke of Diamond. Lord Diamonte was banished to France for his treasonous acts. As Jared fights old demons, the dangerous journey south begins. The spectre of death hovers over them as Lord Diamonte's minions hunt Lucy and Jared.
It's a game of cat and mouse as Sir Michael Tidley pursues a secret mission for the Crown. The last thing he needs is a meddlesome woman to complicate things. Miss Katrina Shepherd has privately loved Michael since long before he was knighted. She longs to exonerate her father's reputation and knows Michael needs her help with decoding intercepted treasonous documents that could save the lives of thousands of British soldiers. When the Black Diamond reveals his connection to Michael and threatens Katrina, Michael's resulting injury causes him to forget it all.
Lord Phillip Westcombe is a younger son and sufficiently independent. He has no need to upset his tidy life with the messiness of love, but when he comes to the rescue of the lovely Lady Elizabeth Follett, and the two are found in a compromising position, his life takes an unexpected turn. Barely knowing each other, they are forced to wed. Embarking on a new life, they must learn to trust God as they face an evil which threatens their lives and the security of the British Empire.
Lord Marcus Remington has decided it is time to find a wife. He didn't expect her to be in the wreckage of a carriage in the middle of a spring storm, but rescuing Miss Josephine Storm challenges his heart and very character of the man known as the "Virtuous Viscount". But when the injured young woman weighs heavy on the viscount's mind, convention goes out the window.