Murder on the Dance Floor (смешанная)

Ten years after the war Harry is heading up the new Muggle Liasion Department and finds himself working with Dr Severus Snape, his former (for one year only submissive).
In an attempt to meet his need to submit Severus joins a new BDSM club several months later he becomes concerned by a spat of poisonings in his club.
When the victims' files are brought to him by a colleague Severus suspects a plot to kill subs in his club.
He turns to his former student Charlotte Bennett, who has recently been employed in Harry's new unit for help.
When things escalate Harry and his team are called in to investigate and Severus goes to Harry offering him help to catch this person.
The investigation becomes both a murder enquiry and an undercover mission which can only lead to trouble.
This case becomes very personal for Severus, a link to an old lover comes out and he discovers his feelings for Harry are not solely in the past.
Can Harry and Severus solve the mystery, catch a killer and find their way back to each other?