A young mage gains control of her powers as she investigates strange events—and protects her family from ruin—in this gaslamp fantasy.

Only Magus Hopkins knows that Charlotte used magic to hoodwink the Royal Society and help her older brother get into the College of Dynamics. Now she's learning the true nature and extent of her powers under his secret tutelage. But when her brother sends for her—and her alone—she knows he's in trouble. Now, ready or not, she must come to his aid.

Heading by train to Manchester, Charlotte must investigate a textile mill where the disgruntled workers are apparently destroying expensive equipment. And if she can't identify the culprits before it's too late, her brother will be exiled . . . and her family dishonored . . .