The House Party — Fenella Miller

A House Party - published by Robert Hale in 2008 as - The House Party
Regency Romantic Adventure
74 000 words
Sensuous

When Lady Dalrymple, Penelope Coombs great-aunt, accepts Lord Weston's invitation to join his house party, Penny is most displeased. She was slighted by the Earl of Rushford during her season and has no wish to repeat the experience.
Lord Edward Weston, who secretly works for the British government, is searching for the traitor who is smuggling gold to France. Ned suspects the villain is travelling with an air balloon party, so invites the balloonist to his home in order to investigate his suspicions.
Penny is almost abducted on her ride over to Headingly Court and this is the beginning of a series of ever more alarming events. James Weston is there to offer his support and comfort. He is charming and not at all arrogant and irascible like his cousin Ned.
Will the handsome Frenchman, Count Everex, evade capture or succeed with his nefarious plans?