Read the extract from Dr Jekyll and Mr Hyde and answer questions 8-10 below.
Upon the reading of this letter, I made sure my colleague was insane; but till that was proved beyond the possibility of doubt, I felt bound to do as he requested. The less I understood of this farrago, the less I was in a position to judge of its importance; and an appeal so worded could not be set aside without a grave responsibility.
Jekyll wrote to Dr Lanyon asking for help, what does this show you about their relationship?