5/5 The secret of long life is out, but Diana must face the media alone.
4/5 Biochemist Diana Brackley's attempts to conceal the source of the antigerone are overcome.
3/5 Diana's compensation payout catches the attention of Fleet Street.
2/5 Diana secretly begins her own investigation into the mysterious properties of the lichen.
1/5 Stumbling on a discovery, a biochemist must battle to ensure that it benefits humanity.