The threat to the Keepers doubles in the fourth Keepers of the
School adventure from Andrew Clements, the master of the school story.
Benjamin Pratt and his friends Jill and Robert are determined to save
their school from destruction. But just when it seems they've finally
gotten the upper hand over that awful Janitor Lyman, they're caught
completely off guard by his next move: Lyman has called in
reinforcements, and suddenly Benjamin, Jill, and Robert find themselves
dodging not one evil janitor, but two. That's right: Lyman's got
himself a partner. And it quickly becomes clear that Wally, the new guy,
is even more corrupt and menacing than Lyman.
Luckily, Ben's team has been growing too. Plus, thank to the latest
safeguard, they also have a secret fund of millions of dollars. But all
the money in Massachusetts isn't enough to stop Lyman and Wally, not
when they've come this far, and not when they are about to put the most
harmful part of their plan into play. Could the next safeguard give the
Keepers what they need--or has their battle to save the school already
been sunk?