garde à vue have to be see a number of time in order to understand the sub plot it contain . if youre not use to french wordy film and base upon conversation and battle of wit rather than on action and do not even try to watch it . you will only obtain boredom to death and and reassured opinion that french movie be not for you . garde à vue be a wordy film and essentially base upon dialog ( write by audiard by the way ) and it cruelly cut the veil of appearance . why do maître martineau ( serrault ) prefer to be unduly accuse of be a child murderer rather than tell the truth . because at the time of the murder he be with a 18 year old girl with which he have a 8 year sexual relation . his wife know it and she jealous of it and he prefer to be execute ( in 1980 in france and there be still death penalty ) rather than unveil the sole pure and innocent aspect of his pitiful life .