At least yours tries. My teacher thinks teaching is giving a syllabus document and a text book and then showing up to class 20 minutes late and sitting up the front doing nothing.
Try using an early Agatha Christie when comparing contexts. You have the post- colonial context of Anil's Ghost and the imperial comtext of the pre-ww2 Great Britain.
You can also compare the the heat and intensity of Sri Lanka to the cosy, stiff upper-lip British style of crime fiction.
what sort of task is it? because we haven't even recieved notification of any yet. is it a comparison of differenent sub-genres? THen you should look for texts that also utilise the theme of returning from afar and then learning truths about yourself and the world around you or the like.