It started with former Homeland Security Adviser and CNN contributor Fran Townsend reporting on CNN.com Wednesday that an arrest had been made related to the Boston Marathon bombings:

CNN went with it on TV but then conflicting reports surfaced and CNN didn't know what to do:

Then CNN went back to reporting there was in fact an arrest:

Then they had doubts:

Again, they didn't know what to do:

Finally, CNN got the sources that counted:

How it ended:

"Okay, so let's reset. Let's back up..."-- CNN's Chris Cuomo, who was anchoring the coverage.