Nest is inviting people to find out how bizarre events unfolded in an integrated campaign for its security cameras, taglined "Mystery Solved."

The campaign, created in-house at Nest, includes print ads that depict strange situations -- such as a car sinking in a swimming pool or a runaway lawmower-- and invite the viewer to go online and check out the video footage of how it happened.

Meanwhile, billboards in Chicago, Denver and San Francisco, via 60 Grit and Lithographix, actually stage the strange events -- one, for example, shows the camera sitting alongside a parachute dangling from a building.

The gist of the message is that, with Nest Cam connected to your phone 24/7, no mystery will ever go unsolved.