 Isaac Amsel – an 18 @-@ year @-@ old boy and witness at the trial ; he is the son of Isaac Amsel senior , former member of the search party killed earlier in a skirmish in São Paulo ; he joined the party to avenge his father 's death . 
 Isaac Amsel – an 18 @-@ year @-@ old boy and witness at the trial ; he is the son of Isaac Amsel senior , former member of the search party killed earlier in a skirmish in São Paulo ; he joined the party to avenge his father <a href='null_genetive' title='1'><mark>'s</mark></a>death . 
Isaac Amsel – an 18 @-@ year @-@ old boi and witness at da trial ; he is tdason of Isaac Amsel senior , former member of the search party killed earlier in a skirmish in São Paulo ; he joined thdaarty to avenge his father  death .