Our Secret Gang
There’s a Body in the Brontosaurus Room! by Shannon Gilligan, 1992.
This is the last book in the Our Secret Gang series. This story takes place in a museum, and at the beginning of the book, there are maps of the interior of the museum, which help in keeping track of the action. Members of the detective gang in the story take turns narrating different books, and this one is narrated by Davey.
The fifth and sixth grade classes at the kids’ elementary school are having a camp-in at the Museum of Science in Boston. When the kids are getting on the school bus, Tim notices that a teacher is reading a copy of a newspaper with an article that says the police have received a tip that there will be a jewel robbery at the museum they’re visiting because there is a visiting exhibition of valuable gems. The kids think that they may have found the next case for their detective gang, and they’re glad that they brought some of their equipment with, like their walkie-talkies.
When they stop for dinner at a pizza place, they learn that students from Longmeadow Middle School will be joining them for the camp-in at the museum. By coincidence, Jeanine knows one of the boys from Longmeadow, Jeremy, because she takes horseback riding lessons from his mother. Jeremy ends up joining the others for dinner. Even though Davey rolls his eyes at his little sister’s jokes that Jeanine is his girlfriend, he feel unexpectedly jealous at the way Jeanine blushes around Jeremy.
While they’re having dinner, Tim notices a boy who is all by himself and crying. Jeremy says that he’s a new boy at his school named Matthew. Kids have been trying to make friends with Matthew, but Matthew never seems interested.
As they’re getting ready to leave, Jeanine makes plans to meet up with Jeremy and hang out at the museum. Davey gets angry because he wants the whole gang to investigate their possible mystery, and he doesn’t want Jeremy being forced on the group. Davey and Jeanine have an argument about his jealousy, and Jeanine separates from the group at the museum to hang out with Jeremy. Davey worries that this will split up Our Secret Gang or at least that they’ll lose Jeanine.
To make matters worse, Davey sees Mr. Berrar, the headmaster of the special school for science and mathematics that his parents and school principal wanted him to attend, at the museum because he is one of the museum trustees. Davey’s secret is that he is a genius at mathematics, and his parents and school principal wanted to send him to a special high school, skipping multiple grades, even though he didn’t feel ready to do that. Davey managed to persuade his parents that he would be happier remaining in a normal school with his friends, but he dreads other kids finding out and teasing him for being a nerd.
While Davey and the other kids are looking at the gem exhibit and talking about the security features they’ve noticed, still considering whether someone could be planning to rob the museum, Davey spots Jeremy in an area that’s marked “Private-Museum Staff Only.” What is he doing, sneaking around an off-limits area?
The rest of the detective gang, minus Jeanine, solves a small mystery for a girl from another school who lost her retainer, Lorraine. It only earns them $3 in detective fees, but Davey decides to hang out with Lorraine for a while and see if Jeanine gets jealous of them like he was of Jeanine and Jeremy, which she does. Davey thinks it’s only fair that Jeanine feel some of what he’s been feeling, and since she’s been giving him the cold shoulder and not helping with the detective activities of the group or joining her friends in looking at the exhibits, she deserves it.
Just as all the students are getting ready for bed, a girl starts screaming that there’s a body in the brontosaurus room! She says that it was lying right underneath the dinosaur, but when everyone rushes to look, it’s gone. Then, Matthew apparently has an attack of appendicitis and is taken away in an ambulance. Something about the ambulance strikes the kids have peculiar, but they have trouble thinking what it is at first. By the time they realize what was wrong, things have already started happening in the museum. The guards are missing, and security devices have been turned off. It seems that the robbery rumors were true. What can the kids do to stop it?
The book is available to borrow and read for free online through Internet Archive.
My Reaction
I first read this book as a kid, and one of the things I liked about it most was the title. I still think about when I’m at a museum with dinosaur exhibits. I never went on one of those camp-ins at a museum when I was a kid, but it’s something that I would have liked, especially if there was a mystery involved!
The romantic bickering in the story is juvenile, but I remember similar incidents from when I was about the age of the kids in the story. Some adults still do things like the kids in the book do, like seeming to flirt with someone else to make a partner jealous and get their attention. It’s never a good idea. It just adds another person to an already-complicated and highly emotional situation without resolving whatever was behind the initial problem.
As an adult, I thought that Jeanine was a little thoughtless and rude for ditching her friends to hang out with a guy she seems to have a crush on. When you already have plans with a group of people, suddenly tossing them aside to make plans with someone else and ignore them is rude. However, Davey’s jealousy and possessiveness is also inappropriate, and his behavior is part of the reason why Jeanine broke off from her usual group instead of just having her other friend join them. If Davey had either allowed Jeanine’s friend to join their activities or simply told Jeanine that he was hurt that she seemed to be abandoning the group and their latest project to pay attention to this other guy, his behavior would have been more reasonable. Part of the problem with simply inviting a new member on short notice is the secret nature of the group. To invite Jeremy to join them, the whole group would really have to agree on it, and that’s difficult in the public setting of the story. I think Jeanine should be a little more aware of the awkwardness of the situation because she knows why their group and its activities are secret, but it still doesn’t excuse Davey’s behavior. A large part of the problem is that Davey hasn’t given much thought to his real feelings about Jeanine, and he’s having trouble coping with the realization that he feels more strongly about her than he’s been willing to admit. The two of them sort things out when they have an honest talk with each other about their feelings.
One of the things that I particularly remembered about this book was the controversy over whether the brontosaurus is really an apatosaurus. Some of the thinking about the brontosaurus has changed in recent years.





























Queen of the Sixth Grade by Ilene Cooper, 1988.
Fudge-A-Mania by Judy Blume, 1990.