This is the fourth (and final!) installment of the fantastic Finishing School series, and WOW! To recap: his is a steampunk YA romance set in 1850's England and both vampires and werewolves exist. Some mild spoilers may be present. 
 Sophronia has been at Mademoiselle Geraldine's for four years now, and she's sad that her bestie, and ardent admirer Soap--a black "sootie" (steamworks worker keeping the airship school afloat)--is no longer aboard the ship. He was gravely injured in the previous book, and Sophronia brokered his healing by pledging herself to serve the werewolf dewan--advisor to the queen. 
 Sophronia's still on the look out for the nefarious Picklemen who seek to discredit all supernaturals, and also control all the steampowered devices in the land. She catches these rascals on board the school, but they escape after completing some unknown purpose in the pilot's port. This later ties in to the Picklemen causing serious havoc with the school. 
 I do not want to give the plot away...at all, but Sophronia has her work cut out saving her friends and teachers aboard the airship. She'll be tested mentally, physically and emotionally and forced to cooperate with one of her former adversaries. The love story between Sophronia and Soap seems to be doomed--it is unsuitable by society's standards--but Soap's new status leaves him outside of society altogether. Is this is path for them? Will Sophronia survive the Picklemen's plot? It's a rather hair-raising ride across England and in the path of constant danger of not only marauders but an untethered vampire. 
 I simply adored this series. It's witty and fun, and frisky! There are some not-so-subtle hints toward burgeoning sexuality, male nudity, interracial romance, even...well, allusions toward outre lifestyles for some of the boys. It tickled me from the first page, and wrapped up the four-book plotline beautifully. I highly recommend reading the series.