Poison Most Vial is a classic young sleuths mystery that brings out the nerdy detective in the best of us. Ruby and Rex are determined to find who really killed Dr. Ramachandran and clear her father's name. But these two are lacking in experience so how in the world are they going to solve a mystery that's too confounding for even the police? And what are they going to do to disprove the clear evidence against her father? Rex and Ruby will find that things are not always as they seem and help can come from unexpected places.

Rex and Ruby are pretty average elementary students--they're even placed with "The Regulars" at the DeWitt Lab School. They live in the projects and walk home from school together. Their slightly odd friendship fits both of their personalities and they're probably the last pair you would expect to solve a murder case! I liked their back-and-forth banter and how their slightly odd personalities seemed to complement each other. I don't think that anyone could NOT like Ruby. She has quirky little OCD habits like counting her steps (three plus one) and she's sharp. Both of them appeal to the nerdy kid in all of us.

The story itself, while not the most fast-paced murder mystery, is steeped in authentic situations where our young sleuths narrowly escape danger (although luckily for them, the danger is never TOO dangerous). The help that they receive from the elusive Mrs. Whitmore (aka The Window Lady) helps them more than they ever expected it to and she gives us all little science lessons along the way.

While I won't say this is my personal favorite read of the year, I think that it will hold a lot of appeal for the young audience at which it is aimed. If you've got a late elementary reader looking for a mystery with a little nerdy science thrown in (even if they don't ask for that second part--sometimes you just know), then Poison Most Vial is a great go-to book.