Story
In Victorian Brighton, a scheming pub landlady uses the timorous son of a domineering pharmacist to assist in the poisoning of her drunkard husband. (The title is from the way pharmacists used to wrap parcels containing poison.)
Where to watch in India
Pink String and Sealing Wax is not on a streaming service in India that we know of.
Availability can change. Check the service before you plan your evening.
The Quiller Memorandum
Footsteps in the Fog
Islands
Blood Ties
Rogue Agent
Wardriver
The Virtuoso
The System