Two detectives, one phone, 15 years apart — and somehow the past keeps calling collect.
Season 1 • Episode 32
LatestThrough a mysterious Motorola phone, two detectives - one from the present, and the other from 15 years in the past - begin communicating and working together to solve cold cases.
Writing
Tight paradox plotting across 15 years of callbacks.
Acting
Du Chun and Li Xiaoran sell impossible chemistry through static.
Production
Dual-timeline period detail that actually commits.
Trivia, insights & behind the scenes
This is the Chinese remake of Korea's Signal (2016), part of a wave of Korean-to-Chinese crime drama adaptations that dominated streaming platforms in the late 2010s.
The Motorola Razr becomes practically a character itself — the production reportedly secured vintage units because modern smartphones would've killed the analog tension.
CN
