How could the doctor go this far?

As the newest member of the team, Brady shouldn't be surprised that he's not the last. But nothing prepared him to face a panicked teen with the lung capacity to bring the building down around their ears.
Marcus Robinson is sweet, friendly, likeable—and way too young to bring into the group without letting his family in on the secret. Will his unique strengths be enough to earn him a place in the den? Or will the risks to the rest of the team prove insurmountable?