What Columbo would say if he was asked to collect da testimony of irate 'n' bickering witnesses who would need to be verbally placified and encouraged to get along wif each other so dat they could all speak coherently while relating to said famous detective what they saw.
What with Columbo's inherently calm and unassuming manner, he put people at ease, and so if he said, "I reckon I can peace the story together" during an investigation, you could generally count on his being able to do so.