Because you're likely to get a message back from your secret agent partner, you will need to be able to decode messages like this yourself. Use the keyword PYRAMID to read the following.

IKGGKV PDMJS W SK SBM YKPS.

SMB HKJMX VCGG YM AMGFUMOMA SBMOM.

HMMS HM KJ AMRF R.

The answer is on the next page.