Are you searching for a Hidden Expedition: Smithsonian Castle Walkthrough? Then look no further... we've got you covered with a complete walkthrough filled with everything you'll need to complete this new mystery. 

With six comprehensive chapters brimming with custom marked screenshots, detailed instructions, and simple puzzle solutions, you'll have no trouble solving even the toughest challenges. 

Want to know what to do in the laboratory or how to solve that elements puzzle? Or maybe it's the lockbox puzzle that's really got you frustrated... no need to pitch a fit, we've got all the answers you're looking for!

Not familiar with the game yet? Here's a brief description of what's in store for you: 

In Hidden Expedition: Smithsonian Castle, your old buddy and H.E.L.P. operative Sam calls you in to investigate a strange anomaly at the Smithsonian Castle. You soon learn there’s more to this anomaly than meets the eye, and H.E.L.P’s reach stretches back to the Smithsonian’s historic founding. Unlock the secrets of time travel as you follow the clues into the Smithsonian Castle’s Civil War past in this amazing hidden object adventure game!

We hope you enjoy our Hidden Expedition: Smithsonian Castle Walkthrough!