The Supernatural agents:Hide documents

After Ash found the one who killed the people from the orphanage he disappear for months makes all of the Supernatural Agents think he resigned secretly but in reality he just gone like a bubble was pop in the air.

Until, one day chloe figure out about the unknown files has a connection to ash before he disappear and robin experience weird things like he is dreaming about ash talking to him on his dream makes him question himself why he always dream about ash.

Did the unknown files can answer for ash disappearance? Or Robin is the one can find the answer?