1995 Ford Thunderbird Engine turns but won't fire

My 1995 Ford Tbird is a daily driver. I know it has a lot of miles but it's always ran great. I just drove it yesterday for 100 miles (as always) with no problems and today it just turns and will not fire. Nothing should have changed recently and it's parked in a 65 degree temp garage nightly. It's been a while since I've done a tune up on it but it runs very smoothly with no sputters or shakes. I didn't really smell gas while it was trying to turn but then again my nose isn't very keen. I even sprayed a little engine starting fluid in the air intake and it didn't do any good. I really didn't have the opportunity to pull the plugs and check for spark and I didn't have any check engine light yesterday but today while it's cranking, the light is on. I can't remember if that goes off after the engine starts (normally) or not. Any ideas?