Stranger Things: Kamchatka (Stranger Things: Kamchatka #1)

A Russian scientist is kidnapped by Soviet troops, leaving nothing for his two teenage children but a mysterious case and a whole lot of questions. While their father is dragooned into weaponizing a monster brought back from the US, the two teenagers embark on a harrowing and perilous journey to find him, with help from an unlikely ally: an old bad@$$ KGB spy.