Complex sentence: Hunt first meets Alex Drake (Keeley Hawes), the main protagonist of the programme during a police drugs raid at a party, mistakenly thinking that she is a prostitute and unaware that like Sam Tyler, she traveled back in time from the future.
Split into simpler sentences: Hunt first meets Alex Drake (Keeley Hawes), the main protagonist, during a a police drugs raid at a party. Initially, he mistakenly believes that she is a prostitute and is unaware that like Sam Tyler, she has traveled back in time from the future.