Miss Emily is a very lonely and desperate person. She is feeling isolated because her father rejected any suitor that knocked on her door. Miss Emily is so desperate and lonesome she bought arsenic to kill homer. Miss Emily dies; later people found homer's body in the upstairs bedroom. Miss Emily was a very solitary person. This led her to committing murder.
(Just try to change repetitive words with synonyms. It will always be a huge plus for your paragraph but I hope this helps.)
The last sentence is absolutely incorrect, I would say both "There are 1,000,000 people living in the city." and "There are one million people living in the city" are correct.
There was a blood curdling scream and then the noise of the cats crying stopped. The sinister silence in the empty neighbourhoos sent chills down my spine as I increased my pace to reach the (insert place) . you continue.