Keira was bone tired, even the coffee wasn't keeping her eyes open. Her head kept drooping forward despite her best efforts to stay alert.

"You need to sleep," Alexei said, watching her struggle.

"I'm fine," she mumbled, but her eyelids were growing heavier by the second.

"There's a bedroom in the back." He gestured toward the rear of the plane. "Go lie down."

"I don't need—" She started to protest, but another wave of exhaustion hit her mid-sentence, and she needed to cover her mouth to ...