收养人一方因故不能到场的，应出具书面委托书。

Given one party could not present on the scene due to some reasons, the written Letter of Entrustment shall be submitted.

收养的效力，适用收养时收养人经常居所地法律。

The laws at the habitual residence of the adopter at the time of adoption shall apply to the validity of adoption.

第2集：儿童旅客：沃尔特对俄罗斯被收养人的谋杀。

2: of Children and Travelers: Walt investigates the murder of a Russian adoptee.