This Thai cop series, based on a Korean original which I've not seen, is centred on two police officers; Captain Irin, who leads 'Golden Time' a group who take phone calls and react immediately and Lt Aran who, initially unwillingly, works for the unit. The two have a connection; Aran's wife and Irin's father were killed by the same man on the same night... Irin's testimony leads to the prime suspect going free. She also has unusually good hearing that frequently proves vital in investigations. They are reunited on the new team three years later. Eventually they work together to identify the killer; somebody with powerful connections in business, politics and the police.
I thought this was a really enjoyable series. It got off to a great start with a really gripping opening. Once our protagonists are brought together it progresses nicely with good character development throughout the series. There are some stand-alone investigations but the central mystery is never forgotten. The identity of the killer isn't made clear for some time although I'm sure most viewers will guess the identity before it is revealed. It does require some suspension of disbelief as characters in danger manage to stay on the phone long enough for the team to find them. The end wraps things up nicely so one doesn't have to worry about starting a series that has no proper ending. The cast is solid; especially the main characters. Overall I found this well worth watching.
These comments are based on watching the series in Thai with English subtitles.