Lowdown works if you want it to mean inside information:
The real and unadorned facts; the true, secret, or inside information (usually prec. by the): We gave them the lowdown on the new housing project.
The whole truth: gave us the lowdown on what happened at the party.
lowdown - Definitions from Dictionary.com
Rundown also works. It means, a quick review or summary of main points of information, usually oral: This brief rundown of past events will bring you up to date.
rundown - Definitions from Dictionary.com
Does that help?