Up next, an explosion rips through an Illinois church.

The town was terrified.

Evidence was everywhere.

We found evidence on top of buildings that did brieffield was huge.

Two teenagers implicate one another.

Dungeons and Dragons looks like the cause.

I thought that was an incredibly stupid thing to do.

But a thin blue wire tells a different story.

Oakwood Illinois is a quiet small town of less than a thousand residents

and little if any violent crime.

At the Oakwood Methodist Church,

as volunteers prepared for their Christmas celebration,

church member Brian Plower walked outside

where something caught his attention.

Some of us thought that maybe a vehicle had driven into the church.

We got there right after the first responders did

and their first reaction was that it was a gas explosion.

46-year-old Brian Plower was killed instantly.

He left behind a wife and three children.

Very charismatic, gregarious Brian never made any light.

Bill Adams's daughter walked out just moments before the explosion.

It is by pure chance that it could be my daughter.

...