Fruit Box: A short story

(PLEASE critique and tell me what parts sound good and what other parts need to be worked on. Thanks!)

WARNING: There may be certain parts in this short story that contains gory or rather disturbing content (descriptions). If you are easily disgusted then this story might not be for you.

It's just another ordinary day for Mitchell, being stuck at home, alone. Just have to abide to one rule, never open the door to anyone, even to a family member or friend. But when a frantic knocker (stranger) comes and leaves something behind, a fruit box, he is left confused and ponders about the knocker and why they left this item. Little does he know that this box holds a deeper meaning with a tragic consequence.