In both dramas a child "returns" to their family. during the drama doubt arises of the identity of that child and if its truly this person. While in Homesick this is pretty much clear from the beginning, it is a mystery in "Lost in the Shadows". Both children are however involved in a murder case and try to figure out what has truly happened to the person who's identity they have taken on.
Both shows have the same screenwriter and the same heavy feeling to them; both shows are fairly simple on the surface but a layered mystery lies underneath. Both dramas play with your mind and show you exactly what you want to see. Both shows feature an underprivileged/poor lead - Yan Liang and Yue Pu in The Bad Kids and Chen Youxi in Homesick