Problem: Nick was a better musician than Brian, so

My choice: Nick didn't have to practice their music as regularly.

Problem: The coroner tried to put the body in the bag but the

My choice: body was too large.

Problem: Logan worked for the government while Joseph worked at a coffee shop, so

My choice: Joseph was paid by the shop owner.

Problem: Megan's memory is a lot sharper than Rebecca's is due to

My choice:
Megan being a lot younger.