The Misses Azalea and Iris Gates, the white-haired twins who lived shut away from the world, summon Doris to help them out of an unusual circumstance. How Doris hears of strange unknown relatives and saves a mysterious fortune is told in a story full of action and humor.
I came across the Doris Force at Locked Gates book within the Second Girl Detective Megapack, published by Wildside Press. The original title first appeared in 1931 and was written by Mildred Wirt Benson (the author of the original Nancy Drew books) under the pseudonym of Julia K. Duncan. Anyway, the Doris Force at Locked Gates features a feisty 16-year-old girl amateur detective named Doris Force, who gets summoned by two mysterious elderly twins, purportedly regarding the estate of her equally mysterious and long-vanished uncle.
Doris lives with another Uncle who helps her manage her dwindling inheritance, but thinking she might fall into another inheritance, she visits the two spinsters along with a friend. Turns out there's no inheritance waiting for her. Instead, the spinsters need help dealing with their financial troubles and with some shifty crooks. Like Nancy Drew, Doris and her friends are up for the challenge.
Also like Nancy Drew, Doris Force is respectful, considerate, courageous, and, of course, beautiful. But her detective skills are not nearly as developed or polished. That's fine because she's not necessarily trying to solve a mystery but rather to help get to the bottom of a challenging situation.
The one nitpick I have is that Doris sometimes seems childish, while at other times, she has the calm, cool, collected demeanor of a young woman adventurer. It's like the author was trying to work out who Doris was. Even so, I thoroughly enjoyed reading the book and look forward to the next one in the series.