The cinematography is superb. The reconstruction of the journey includes breathtaking imagery of the harsh landscape the migrants are up against as well as stunning footage of young men riding atop a train known as 'La Bestia'. A record of their journey is combined with interviews with various border officials and the forensic experts who are clearly determined to discover the identities of the dead. At the heart of Who is Dayani Cristal? is a firm rebuttal of the demonisation of migrants and the usual rhetoric surrounding 'aliens' and 'illegals'. US border officials are surprisingly compassionate, focusing on the humane rather than political issues, and the dedication of the forensic team is truly impressive. Silver and writer Mark Monroe draw out the universal themes of hope, aspiration and love and underline the fact that the majority of impoverished migrants, like the tattooed 'Dayani Cristal', risk their lives on a daily basis to provide for their families. Wisely, they choose to reveal the man's origins, his personal story and reasons for travelling north only at the very end.