"The Perfect Alibi"
The criminal investigation careers of Lu Chen and Su Mo were completely overturned by an "impossible crime". Interpol captain Lu Chen took over the murder case of a wealthy businessman. The suspect Lin Hao had a perfect alibi supported by both surveillance and witnesses, but he appeared in the vague surveillance downstairs of the deceased's home during the incident. Trace appraiser Su Mo repeatedly inspected the scene and found a strange fingerprint on the murder weapon that could not match anyone.
The two teamed up to investigate and found that Lin Hao's chain of proof seemed seamless, but in fact every link contained subtle flaws. As the investigation deepened, they were involved in an old case from ten years ago. In that year, the same suspect got away with a perfect alibi, and the murder weapon also had the same strange fingerprints.
When Su Mo cracked the secret of fingerprints, Lu Chen also saw through the core conspiracy of the alibi, but found that the real culprit behind the scenes had already laid a bigger trap, and the next target was themselves.
