A grandmother from Teesside, who is currently facing the death penalty in Indonesia, will argue that she was coerced into carrying the cocaine over threats made against her family.
56-year-old Lindsay Sandiford was arrested in May earlier this year when she was stopped at Ngurah Rai International Airport (Denpasar) in Bali with four kilogrammes of cocaine.
If found guilty of the drug charges she could face the death penalty.
Lindsay maintains that she finally agreed to travel to Thailand where, convinced her son would be in danger from criminal gangs if she refused, she agreed to carry a suitcase to Bali.
She says she was too scared to tell anyone what was happening to her until she was arrested on her arrival in Bali.