I've been investigating a series of murders in London.

A Detroit police detective investigates a series of crimes with its roots in the 1960's.

I am investigating a series of murders on the planet Bellerophon.

Later, she and Don are partners while investigating a series of home invasions.

Their quest leads them to investigate a series of mysterious asphyxiations.

Walker and Pilgrim investigate a series of murders at a college campus.

I had visited the state five times, investigating a long series of very strange events, and had many friends there.

The film centers on a police detective investigating a series of gruesome murderers.

A coroner becomes involved with a prostitute, while investigating a series of murders.

I discovered the demons while investigating a series of murders.