I'm in the process of re-reading the entire Amelia Peabody series again, from start to finish in one go. They are still some of my favorite books. They must be read with tongue firmly inserted in cheek. It also helps to have an interest in and some knowledge of Colonial-era exploration narratives, fiction like that of H. Rider Haggard, Orientalist studies, the competitive acquisitive zeal of western museums at the turn of the century, and the "gentlemen archaeologists" of the 19th century who brought more treasure-hunting fever than academic and historical interest to their digs. That is to say nothing of the insight into early seeds and outbreaks of unrest in the Middle East that find their way into the middle and later novels in the series. Add to this impressive list of "ingredients" a dash of early feminism, British upperclass manners, interesting plots, and especially the academically sound Egyptian history from a legitimate scholar (Elizabeth Peters had a PhD in Egyptology from the Oriental Institute at the University of Chicago) and you have the very best in historical fiction, enclosed within adventurous and funny plots led by engaging and memorable characters who, though immensely more enlightened than many of their time, nonetheless remain realistic people OF their time, seeing the world through glasses tinted by their own culture and class. Though they attempt to rise above prejudice, they cannot quite entirely do so. Elizabeth Peters showed immense wisdom of the human condition in this aspect of her characterizations, reminding us all that we cannot even be aware of - much less remove - ALL of our preconceptions through which we see the world around us. Even the best of us - like Amelia - can continually peel back the layers of lenses through which we see the world.
All these philosophical, aesthetic, academic, and historical reasons for loving the series are thus topped off with depth of characterization, imaginative storytelling, fast-paced plotting, excellent word-crafting, and an overall affectionate humor about the human condition - the whole coming together even better than the sum of its parts to make it one of my favorite series of all time. I might add that it's a series that I've read and re-read multiple times, something that I almost never do.
To be fair, my one criticism about the series is that the non-chronological nature of the last few books gets a big confusing even to me, someone who's read them multiple times. They're still very enjoyable, but holding the timeline and chronology of events in my head is not always easy. I plan to tackle the compendium "Amelia Peabody's Egypt" soon to see how that clears things up. Nonetheless, I'm waiting with bated breath for the book Elizabeth Peters was finishing at the time of her death to be published. I think it would be a great tribute to her career to publish it posthumously.
I have been really surprised when friends I've recommended the series to haven't been as enthusiastic as I am about Amelia Peabody. I think I can attribute that to the fact that my first go-round of the series was on audiobook and Barbara Rosenblat and Grace Conlin did such a marvelous job of giving the series the proper amount of irony and tongue-in-cheek humor and updated H. Rider Haggard-style adventure, that even today when I read the series I hear it in their voices in my head. If you are having trouble connecting, then, I recommend listening to at least the first several books on audiobook. It wouldn't hurt to do some quick Wikipedia research on Colonialism, Egyptology, Howard Carter, Wallace Budge, Orientalism, H. Rider Haggard, museum-sponsored archaeology of the latre 19th & early 20th centuries (especially the competitiveness between the British Museum & the Metropolitan Museum of Art(, WWI, pre-WWII espionage, dismantling of the Ottoman Empire... anything relating to history of the 19th century to early 20th century. All will add to your enjoyment of the novels as well as your appreciation for how deftly Elizabeth Peters wove history and real people throughout her fiction.