Detective Riddles

Detective riddles tell you a story and require you to figure out what is suspicious or wrong with what you’ve read. If you like doing detective work, you will love these riddles.

Egg Spinning Competition

You are a junior detective investigating a case. Boys at an apartment complain that every day, they have an egg spinning competition with only raw eggs, and every day one particular boy wins.

The boys want you to find out how. You are observing the boy spinning an egg when suddenly it drops to the floor. The apartment clerk casually hands him a broom to clean it up, as if it happens every day. You now know why the boy always wins the daily competition. How?

Riddle Answer

Shot and Killed

There are five people. One of them shot and killed one of the other five.

  1. Dan ran in the NY City marathon yesterday with one of the innocent men.
  2. Mike considered being a farmer before he moved to the city.
  3. Jeff is a topnotch computer consultant and wants to install Ben’s new computer next week.
  4. The murderer had his leg amputated last month.
  5. Ben met Jack for the first time six months ago.
  6. Jack has been in seclusion since the crime.
  7. Dan used to drink heavily.
  8. Ben and Jeff built their last computers together.
  9. The murderer is Jack’s brother. They grew up together in Seattle.

Police arrived at the scene and immediately finds the murderer.

Who was the murderer?

Riddle Answer

Murder in the Home of Married Couple

One evening there was a murder in the home of married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime. The other one helped the murderer.

These are the things we know for sure:

  1. The witness and the one who helped the murderer were not of the same sex.
  2. The oldest person and the witness were not of the same sex.
  3. The youngest person and the victim were not of the same sex.
  4. The one who helped the murderer was older than the victim.
  5. The father was the oldest member of the family.
  6. The murderer was not the youngest member of the family.

Who was the murderer?

Riddle Answer

The Combination Lock

After Andrew had been sick for a week, he asked his best friend Jesse to get his books out of his locker. Instead of telling Jesse the three number combination Andrew said he kept a small piece of paper with the combination under his locker door.

After school Jesse went to Andrew’s locker and pulled the paper. On the paper was written:
24 24 22 9 9 9 9 22 24 22 9 9.

Thinking this would be easy but a little tedious, Jesse entered in every arrangement of 24, 22, and 9 there was without the lock opening. Realizing there was something behind these numbers that he wasn’t noticing, Jesse sat down for a few minutes to think it out. After ten minutes of intense thinking, Jesse went to the locker, entered the combination into the lock and it opened.

What was the combination?

Riddle Answer