Mydworth Mysteries Series by Neil Richards, Matthew Costello

Sussex, England, 1929. Mydworth is a sleepy English market town just 50 miles from London. But things are about to liven up there, when young and handsome Sir Harry Mortimer returns home from his diplomatic posting in Cairo, with his beautiful and unconventional American wife, Kat. No sooner have the two arrived, when a jewel robbery occurs at Harry's aunt's home - Mydworth Manor. The police are baffled and overwhelmed with the case... moreSussex, England, 1929. Mydworth is a sleepy English market town just 50 miles from London. But things are about to liven up there, when young and handsome Sir Harry Mortimer returns home from his diplomatic posting in Cairo, with his beautiful and unconventional American wife, Kat. No sooner have the two arrived, when a jewel robbery occurs at Harry's aunt's home - Mydworth Manor. The police are baffled and overwhelmed with the case. But Harry and Kat have an edge in the hunt for the dangerous culprit: not only do they have certain useful "skills" they've both picked up in service of King, President and Country, they also have access to parts of English society that your average bobby can't reach ... less

When heart-throb American tennis coach Todd Winters careens off the road in his speeding car one night and plunges in the river, it seems like a tragic accident. But Winters was a young man with many dangerous secrets, and Harry and Kat discover there’s no shortage of people who wanted him out of the picture. Soon they discover clear evidence: the accident was no accident at all. And now Harry and Kat had best be careful too.. moreWhen heart-throb American tennis coach Todd Winters careens off the road in his speeding car one night and plunges in the river, it seems like a tragic accident. But Winters was a young man with many dangerous secrets, and Harry and Kat discover there’s no shortage of people who wanted him out of the picture. Soon they discover clear evidence: the accident was no accident at all. And now Harry and Kat had best be careful too... even in the genteel world of the Mydworth Lawn Tennis Club, a desperate murderer could be ready to kill again. less