Story
Jealous of her vapidly "good" sister's popularity, poisonous Viktoria doses pretty Klara's tea with a slow-acting fatal substance. As the latter grows hysterically weak, the former finds success increasingly compromised by guilt, blackmail, and the pesky need to kill others lest she be exposed.
Where to watch in India
Morgiana is not on a streaming service in India that we know of.
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What We Hide
The Other
Goodnight Mommy
The Name of the Rose
The Inhabitant
Cracks
Saving Zoë
Good Boy