Sam and Dean meet a girl in a mental hospital who claims she has to stop the monsters.

When John Winchester goes missing, he leaves Dean a single message. "Find Katherine Donovan." 𝐛𝐨𝐨𝐤 𝟏 𝐬𝐮𝐩𝐞𝐫𝐧𝐚𝐭𝐮𝐫𝐚𝐥 𝐬𝟏-𝟑 sʟᴏᴡ ʙᴜʀɴ ! #1 spnfanfiction 4|2020, 2022 #1 spn 4|2020 #1 spnfamily 7|2020 #1 deanwinchester 3|2021