In episode 7 Sol returns home to find that Caroline is no longer there and is told be a neighbour she has been taken away but does not know where.
In episode 9, Sol found his Caroline and is with her in hospital. It is explained that the police found her in the middle of the road with no shoes and unconscious. It is revealed to Sol that she has schizophrenic.
In the last episode Caroline is seen again in hospital conscious.