He died after treatment for pneumonia, and a ruptured lung was compounded by the presence of the MRSA superbug.
Mr Goodwin, who also represented Evans when he was alive, said there were two distinct parts to his inquiry. The first covered the period in which Evans was a prisoner at Mt Eden. It was believed he had suffered a number of assaults, including in a segregated area where he had been placed for his own safety.
The second related to Evans being sent from Mt Eden to Nga Wha Prison in Northland. Mr Goodwin said overcrowding was a reason given for Evans' move but there were apparently just three people in the van which took him north.
"We want to access information about the condition he was in when he went into the (prison transport) truck."
Mr Goodwin said it was believed Evans had complained of chest pains when he arrived at Nga Wha but was sent to his cell without medical treatment.
"At some stage over the next 24 hours, whether inside or outside his cell, he collapsed."
Evans was sent to a medical centre in Kaikohe and referred by a doctor there to Whangarei Hospital.
It was believed the transport van was sent back to the prison so guards could change shifts before Evans was taken to hospital.
"Every moment lost could have been critical," Mr Goodwin said. "We want to assess whether the care of Nick was adequate."
Corrections has two inquiries underway into Evans' death - one into his medical care and another by the prison inspectorate into his death. The coroner is also investigating.
Corrections has said previously it won't comment further until those investigations are complete.