A doctor invents a drug which cause split personality disorder , to take revenge of his uncle's death.
| Release Date | June 9, 1967 | |
|---|---|---|
| Status | Released | |
| Original Title | കറുത്ത രാത്രികൾ | |
| Runtime | 1h 46min | |
| Budget | — | |
| Revenue | — | |
| Language | Malayalam | |
| Original Language | Malayalam | |
| Production Countries | India | |
| Production Companies | Merryland StudiosNeela Productions | |