An apparatus acquires a video image from a surveillance camera 2 and displays an image based on the video image on a display 3. The apparatus 1 records the video image acquired from the surveillance camera 2 in a recording unit 105. The apparatus 1 includes an abnormality detection unit 106 configured to detect an abnormality from the video image, an attention period determination unit 107 configured to determine an attention period based on a period from a start to an end of a detected abnormality, and a displaying unit 102 configured to display a video image acquired from the surveillance camera 2 as it is on a display 3 until the abnormality being detected ends, and, when the abnormality being detected ends, acquire, from a recording unit 105, a recorded video image recorded in a period corresponding to the attention period and play back the acquired recorded video image.