two universes, same place teens and parents

Howard Silk is a lowly cog in a bureaucratic UN agency who is turning the last corner of a life filled with regret when he discovers the agency he works for is guarding a secret: a crossing to a parallel dimension.

Counterpart follows Alex, a young estate agent who lives in a flat with his girlfriend, Lily, a former stripper. They spend most of their time sunbathing or having sex. But someone is watching them from a home across the street. The voyeur is a disabled man who helps the young couple make a life changing discovery