It may be tiny, but this puzzle safe is seriously tough to crack. With hidden locks and clever mechanics, solving it takes precision and patience. Can the world’s smallest safe keep its secrets?

You may be opening Word with the "/safemode" switch, which forces Word to start in Safe Mode. For example, a shortcut file that you double-click to open Word may contain this switch. Open the ...

At 6 inches high, the Undercover safe fits under my bed, but if you have a lower bed frame or one with lower supports, you ...