This book was worth all of the trouble I went through to buy it. The first copy got lost in the mail for over a month before we asked for a refund and ordered it from another seller.
It was hard to find this one at a reasonable price. I ended up buying the golden hardcover edition, which contained this book and two others by different authors. The pages are brittle with age (published in 1971) and tear very easily. I would rather have had the paperback I ordered originally because I've never had problems with brittle pages on these collectable books before.
Alexa lives with her sister Jill in London. One day, she sees a note from Jill saying a man called Richard is taking her to Paris with him. Alexa follows her sister to Paris. To Jill's surprise, only one room has been booked for them, which makes Jill uncomfortable. Alexa and Jill meet up and plan to go home, but Jill remembers her passport is with Richard. Alexa goes back to get it. As she's leaving with Jill's suitcase and passport, Richard kisses her in front of his friend, Christopher, who has just walked in the door. He intimates that Alexa had been sharing his room, rather than Jill.
Some side characters get involved, and lies are told to cover up Jill's embarrassment. The plot goes from there.
"Dear Sir" is number 3 in the Florian series, which starts with "Under the Stars of Paris". I inserted "Yours to Command" into the list because its characters show up in the following three books, along with Florian. Only book 1 and book 5 are shown on lists as her Florian books, but, because I found others with these characters, I made my own list.
Florian Book List
1. Under the Stars of Paris (1956)
1.5 Yours to Command (1956) (not a related story-wise, but has recurring characters in the next 3 books.)
2. On the Air (1956) (has characters from Yours to Command)
2.5 Love is My Reason (1957) (not related story-wise, but characters also appear in Dear Sir)
3. Dear Sir (1958) (has characters from Yours to Command, as well as other former characters)
4. Dear Trustee (1958) (has characters from Yours to Command, but not Florian)
5. Paris and My Love (1960)
6. The Wedding Dress (1961)
7. The Other Linding Girl (1966)
Grey eyes: Christopher; Florian; Sydney Manning has grey-blue eyes