The Fosters 5×13 Sneak Peek #3 “Line In The Sand” Season 5 Episode 13 Sneak Peek #3 The Fosters 5×13 “Line In The Sand” Season 5 Episode 13 Sneak Peek #3 – Brandon and Grace plan the ultimate senior prank which ends up going a little too far. Mariana and Mat make a huge decision about the future of their relationship. Show More… 12 Comments Related Videos The Fosters 5×13 Sneak Peek #2 “Line In The Sand” (HD) Season 5 Episode 13 Sneak Peek #2 The Fosters 5×13 Sneak Peek “Line In The Sand” (HD) Season 5 Episode 13 Sneak Peek The Fosters 5×13 Sneak Peek “Line In The Sand” (HD) Season 5 Episode 13 Sneak Peek The Fosters 4×11 Sneak Peek #2 “Insult To Injury” (HD) Season 4 Episode 11 Sneak Peek #2