Mama Susan's Friends) is a 2010 mystery novel by Filipino writer Bob Ong published in 2010 by Visprint Inc.

Most characters in Galo's journal are people he encounters every day, and some are not described other than having their name mentioned.

Some reviews of the book say that the pace is monotonous; however, it does pick up in the end and cryptic Latin messages embedded in Galo's journal entries add a sense of mystery to the story.

[citation needed] A possible film adaptation of the book had been teased on Bob Ong's Facebook page in March 2016.

On February 6, 2020, it was announced that the book will finally be adapted into film, starring Joshua Garcia as Galo, which will be directed by Chito S. Roño and will be co-produced by Black Sheep Productions and Regal Entertainment.